Recalls


CampaignManufacturerManufacturing dateType# of units affectedDate Owner notified MfgRecall Initiated byManufacturers of recalled vehicles/productsReport Recieved DateRecord Creation DateRegulation Part NumberFMVSS Number
POWER TRAIN - AUTOMATIC TRANSMISSION
03V075000GENERAL MOTORS CORP.from 10/01/2000 to 06/30/2002V (Vehicle)51116705/29/2003MFRGENERAL MOTORS CORP.03/06/200303/17/2003571114
Defect SummaryCertain sport utility vehicles fail to comply with the requirements of federal motor vehicle safety standard no. 114,
Consequence SummaryThese overrides are not permitted unless the vehicle has a locking steering column.
Corrective SummaryDealers will eliminate these conditions by disabling the overrides. owner notification began on may 29, 2003. owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact chevrolet at 1-800-222-1020, gmc at 1-800-462-8782, oldsmobile at 1-800-442-6537, or hummer at 1-866-486-6376.
NotesGm recall no. 03012. customers can also contact the national highway traffic safety administration
POWER TRAIN - TRANSFER CASE (4-WHEEL DRIVE)
01V334000GENERAL MOTORS CORP.from 01/01/2001 to 08/31/2001V (Vehicle)7800411/06/2001MFRGENERAL MOTORS CORP.10/17/200110/31/2001
Defect SummaryVehicle description: sport utility vehicles equipped with 4-wheel drive. the calibration of the transfer case control module could cause insufficient high speed gear engagement.
Consequence SummaryIf the gear is not engaged, the vehicle can roll when the transmission is in park and a crash could result without warning.
Corrective SummaryDealers will update the transfer case control module calibration to increase gear engagement. owner notification began november 6, 2001. owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact chevrolet at 1-800-222-1020 or gmc at 1-800-462-8782.
NotesAlso contact the national highway traffic safety administration's auto safety hotline at 1-888-dash-2-dot (1-888-327-4236).
01V283000GENERAL MOTORS CORP.from 08/01/2001 to 08/28/2001V (Vehicle)89509/06/2001MFRGENERAL MOTORS CORP.09/05/200109/18/2001
Defect SummaryVehicle description: sport utility vehicles (4 wheel-drive). some of these vehicles were built with a range shift collar in the transmission transfer case that contains cracks.
Consequence SummaryThis condition could result in a complete fracture of the range shift collar and subsequent loss of vehicle forward and reverse gears, and the inability to maintain park position. this increases the risk of a vehicle crash resulting from unintended movement of a parked vehicle.
Corrective SummaryDealers will replace the transfer cases and update the control module calibration. owner notification began september 6, 2001. owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact chevrolet at 1-800-222-1020 or gmc at 1-800-462-8782.
NotesAlso contact the national highway traffic safety administration's auto safety hotline at 1-888-dash-2-dot (1-888-327-4236).

Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
POWER TRAIN
00773100171904l60e, 4l65e replacement valve body gaskets does not seem to fit. *tt10/27/2005
3420A10017010Ping, pop or click noise from under the rear. *sc10/20/2005
313810011821Reduced power light on and diagnostic trouble code p1680 p1221 and or p1271 stored in the powertrain control module. *eh02/01/2005
322212/01/20073222D10010630Intermittent boom, rumbling noise at highway speed. *tt updated 2/27/08. *nj12/02/2004
305010010366Pop or snap noise from the rear of the vehicle during aggressive acceleration or deceleration maneuvers. *tt11/17/2004
30023002D100088024l60e/4l65e intermittent neutral condition while accelerating from a stop or while driving. *tt 1999-2006 gm cars, light duty trucks and utilities. *tt08/23/2004
0208601/01/2004100077824l60e, 4l65e intermittent neutral from a stop or steady speed. *tt07/12/2004
0203001/01/200410007750Ping, pop or click noise from the propeller shaft. service vme. *tt07/09/2004
0211701/01/200410007448Tccm will not program through tis. *mj06/23/2004
0159901/01/2004100072374l60e, 4l65e forward and low reverse waved steel clutch plate appearance change. *tt06/04/2004
010730002C08/01/2003010730002B10004354Malfunction indicator lamp (mil) is on; the transmission is stuck in third gear; and / or the instrument cluster is inoperative. *tt12/03/2003
0141011/18/200310004214Poor performance from a stop in 2wd, auto or 4wd hi. 2003, 2003 cadillac ext also included. *tt11/21/2003
06190306/19/200310003710Unusual vibration felt at idle or at very low rpm during parking lot maneuvers. also residence noise accompanying the vibration. *tt10/28/2003
05220305/22/200310003659Product field action 03012. vehicles are equipped with a mechanical override that could allow the ignition key to be removed with the shift lever in a position other than park. in addition, these vehicles have an override that can allow t10/27/2003
03130303/13/2003100019111-2 upshift delay condition at throttle openings. *tt *jb07/25/2003
02042100810/01/200210000174Shudder, rocking motion, binding, feels like vehicle is stuck in 4wd (crow hop) when turning at low speeds. *tt02/14/2003
13120112/13/2001629619Subject regarding service engine soon light on, delayed transmission downshift and/or excessive fan noise. *tt04/04/2002
POWER TRAIN - AUTOMATIC TRANSMISSION
351610017393Vibration felt and heard at low rpm during parking lot maneuvers. *tt11/04/2005
1120200311/20/200310013261Rattle noise underneath the vehicle or an automatic transmission fluid leak. *eh04/13/2005
04073003508/01/200410011217Release of rear transmission mount separate from exhaust mount. *tt01/11/2005
04073000201/01/200410011130Rattle type noise coming from under the vehicle. *tt01/03/2005
31363136A10010080The 4l60e/4l65e automatic transmission slip condition in 2nd, 3rd, or 4th gear. also to include the pontiac gto 2005. *tc11/04/2004
03073005611/01/2003100055664l60-e automatic transmission oil pump first and second design identification. *tt03/04/2004
0070201/01/200400702B10005476Slip condition in 2nd, 3rd or 4th damaged 2-4 band 3-4 clutch on the 4l60e/4l65e automatic transmission. *tt *mj03/01/2004
0143201/01/200310004412Automatic transmission poor acceleration, performance. *tt12/05/2003
020421008A02/01/200302042100810001101Shudder, rocking motion, binding, feels like vehicle is tuck in 4wd when turning at low speeds. *tt04/14/2003
01073003812/01/2001010730038D628934Some customers may comment that the service engine soon lamp is illuminated, no 3rd and 4th gear, the transmission does not shift correctly, the transmission feels like it shifts to neutral or a loss of drive occurs. *tt03/25/2002
01073004312/01/2001628815Subject regarding diagnostic tips for slipping or missing second, third and/or fourth gear. *tt03/21/2002
18100110/18/2001628011Some vehicles may exhibit an intermittent 1-2 shift shutter or possible 1-2 harsh shift condition. *tt03/01/2002
16100110/16/2001628000Some all-wheel drive or four-wheel drive vehicles may exhibit a bump or surge that can occur while the transmission is still in first gear. *tt03/01/2002
1050105/10/2001619777This message applies to a possible delayed engagement of the transmission that may occur after the vehicle sits for two to three weeks. *t06/29/2001
POWER TRAIN - AUTOMATIC TRANSMISSION - CONTROL MODULE (TCM, PCM)
306112/01/20073061F10023773Dtc c0327 with or without additional dtc's setting. with four wheel drive (4wd) only. *nj01/31/2008
01073001804/01/2001619710Subject regarding tech 2 information on 4l60-e shift adapts. *tt06/25/2001
POWER TRAIN - AUTOMATIC TRANSMISSION - COOLING UNIT AND LINES
PIT-472210/01/200810026804Gmc: fluid leak from transmission oil cooler lines due to corrosion. all 2000-2006 light duty trucks equipped with the light duty automatic transmission. *pe12/18/2008
0157301/01/200401573A10005419Rattle noise and/or transmission fluid leak from transmission cooler line contact with catalytic converter. *tt *mj02/25/2004
POWER TRAIN - AUTOMATIC TRANSMISSION - LEVER AND LINKAGE - COLUMN SHIFT
020730024A08/01/2005020730024B634999Diagnosis of cracked or broken transmission case. *tt 2006 and prior cars and light duty trucks. *tt10/11/2002
02042100607/01/2002634893Some customers may comment that the 4wd/awd indicator lights on the selector switch do not work or the 4wd/awd system may be inoperative. *tt10/10/2002
29010201/29/2002629732Information on proper programming for the transfer case control module. *tt04/05/2002
30100110/20/2001628061Information on clean neutral test for 4-wheel drive vehicles invovled in recall bulletin 01064 transfer case replacement. *tt03/05/2002
03070107/03/2001623659Customers may complain of 4-wheel drive light illuminating.*jb10/29/2001
POWER TRAIN - AXLE ASSEMBLY
317710010599Repeat front axle fluid leak. *eh12/01/2004
03041700212/01/2006030417002A10001111Whine noise from rear axle. *tt04/15/2003
03041900209/01/2004030419002A10001123Squeak, squeal or whistle noise from front axle. *tt04/15/2003
01042000303/01/2001622986Subject regarding rear axle exchange program. *tt10/25/2001
12040104/12/2001619412Subject regarding exchange program, bulletin number 010420003 implemented for the 2002 eight inch ring gear axle. *tt05/30/2001
POWER TRAIN - AXLE ASSEMBLY - AXLE SHAFT - SEAL
14110111/14/2001628130Customers may indicate a concern of a front axle seal high-pitched noise coming from the front of the vehicle after driving about ten miles. *tt03/05/2002
POWER TRAIN - DRIVELINE
04042100105/01/200410008503Delayed engagement of front wheels during a slip condition. *mj08/03/2004
POWER TRAIN - DRIVELINE - DIFFERENTIAL UNIT
02041900112/01/200210000723Revised differential carrier assembly replacement. *tt03/27/2003
POWER TRAIN - DRIVELINE - DRIVESHAFT
SB-070417001D05/01/200910030590General motors: a bump or thump noise is heard coming from the rear suspension or felt in the floor. the information affect vehicles with g67 automatic level control rear suspension. *pe10/23/2009
POWER TRAIN - MANUAL TRANSMISSION
01073003611/01/2001627912Service engine soon lamp illuminated, incorrect transmission shifts, poor performance of engine, transmission slipping. *yh02/26/2002
30080108/30/2001625364Information regarding delays in transmission downshifting. *yh11/20/2001
POWER TRAIN - TRANSFER CASE (4-WHEEL DRIVE)
04042100412/01/2004100174424wd switch indicator lights flashing, 4wd inoperative, diagnostic trouble codes c0327, p0550 set. *tt11/08/2005
34243424A10017299Electronic transfer case unable to complete shift. *tt11/02/2005
3349100148094wd inoperative and diagnostic trouble code (dtc) u1026 atc fuse open. *tt05/10/2005
335110014853Intermittent malfunction indicator lamp (mil) with diagnostic trouble code (dtc) c0374 or erratic 4wd/awd operation. *tt05/10/2005
3012B3012A10008806The nvg 136 all wheel drive (awd) transfer case and the 236 and 246 nvg selectable transfer cases operating in the auto mode may exhibit a condition of a vibration/shudder during low speed turns such as a parking lot maneuver, up to approxi08/23/2004
0184301/01/200401843A10007961Calibration for improved transfer case operation in awd mode. *tt07/19/2004
020421006C03/01/2004020421006D10004357Inoperative 4wd/awd lamps, inoperative 4wd/awd system. *tt12/04/2003
020421002A02/01/200302042100210001144Service 4wd indicator illuminated, diagnostic trouble code (dtc) b2725 set, transfer case selector switch is in one position - indicator lamp indicates another range is selected. *tt04/17/2003
020421006A10/01/200202042100610000173Inoperative 4wd/awd lamps, inoperative 4wd/awd system. *tt02/14/2003
0106510/31/2001628547On some vehicles, the calibration of the active transfer case control module may cause insufficient high speed engagement. *tt.03/13/2002
0106410/30/2001628551Safety recall regarding the calibration of the active transfer case control module or a range shift collar that was not machined properly. *tt03/13/2002

Investigations


NHTSA IDManufacturerDate openDate closeSubjectRecall campaign
POWER TRAIN
PE03001GENERAL MOTORS CORP.01/03/200305/06/2003ENGINE STALL
 Of the 697 total complaints, 240 were received for theenvoy and 457 for the bravada.gm has identified about 5,000 warranty claims related to stalling in the subject vehicles.gm reports that a transient voltage spike generated in the ecas degrades the performance of the pcm resulting in engine stall.gm modified the ecas wiring bundle and the pcm for vehicles built after december 6, 2001 to address the stalling problem.
POWER TRAIN - AUTOMATIC TRANSMISSION - CONTROL MODULE (TCM, PCM)
PE03001GENERAL MOTORS CORP.01/03/200305/06/2003ENGINE STALL
 Of the 697 total complaints, 240 were received for theenvoy and 457 for the bravada.gm has identified about 5,000 warranty claims related to stalling in the subject vehicles.gm reports that a transient voltage spike generated in the ecas degrades the performance of the pcm resulting in engine stall.gm modified the ecas wiring bundle and the pcm for vehicles built after december 6, 2001 to address the stalling problem.

Consumer Complaints


Fail datemilesoccurencesPurchase date
POWER TRAIN
02/27/2012131000
 Tl* the contact owns a 2002 gmc envoy. the contact was driving 25 mph when the gears on the differential started grinding and detached from the vehicle. the vehicle was towed to a local mechanic where the mechanic confirmed the front differential failure. the manufacturer was not contacted. the vehicle was not repaired. the failure and current mileages were 131,000.
02/27/2012131000
 Tl- the contact owns a 2002 gmc envoy. the contact was driving 25 mph when the gears on the differential started grinding and detached from the vehicle. the vehicle was towed to a local mechanic where the mechanic confirmed the front differential failure. the manufacturer was not contacted. the vehicle was not repaired. the failure and current mileages were 131,000. kmj
02/27/2012131000
 Tl- the contact owns a 2002 general motors envoy. the contact stated was driving 25 mph when the gears on the differential gears started grinding and detached from the vehicle. the vehicle was towed to the mechanic. the mechanic confirmed front differential exploded. the manufacturer was not contacted. the vehicle was not repaired. the failure and current mileages were 131,000 . rds
04/15/2011125000
 Tl*the contact owns a 2002 gmc envoy. the contact was driving approximately 60 mph, the engine stalled with the illumination of the low oil pressure warning indicator. the vehicle restated and resumed normally. the vehicle was taken to an authorized dealer who informed there was a faulty power train control module. there was a recall associated with nhtsa campaign id number 04v829000 (engine and engine cooling). the vin was not included in the recall. the vehicle was repaired. the vehicle was taken back to the dealer for the similar failure. the technician was in the process of replacing the fuel pump. the failure mileage was approximately 125,000.
04/15/2011125000
 Tl-the contact owns a 2002 gmc envoy slt. the contact was driving approximately 60 mph, the engine stalled with the illumination of the low oil pressure warning indicator. the vehicle restated and resumed normally. the vehicle was taken to an authorized dealer who informed there was a faulty power train control module. there was a recall associated with nhtsa campaign id number 04v829000 (engine and engine cooling). the vin was not included in the recall. the vehicle was repaired. the vehicle was taken back to the dealer for the similar failure. the technician was in the process of replacing the fuel pump. the failure mileage was approximately 125,000. js
08/01/2008410001
 Roaring sound, no power, vehicle can barely reach 30mph, loud noise has existed for long time (several years) and the power problem usually resolved after about 5 minutes. this is a defect. i found hundreds of owners complaining of same problem on line. dealer replaced fan clutch. *tr
POWER TRAIN - AUTOMATIC TRANSMISSION
11/05/2009820001
 I just experienced a safety defect that could have had very serious consequences. it involves the failure of the shift cable attachment to the transmission mounted shift lever. you unknowingly loose the ability to place the transmission into the park position, with the resulting vehicle movement of an apparently parked vehicle. please contact me asap. -- thanks *tr
09/04/20091530001
 I have a 2002 gmc envoy which has a destroyed transmission due to the well known (but unbeknownst to me) failure of the transmission cooling lines. this is a clear design flaw, as the routing is close to the catalyst. besides the obvious safety concerns of an on the road transmission failure, the location makes a fire likely. the design flaw is documented in tsb pt-4722. i believe these vehicles should be recalled. *tr
07/13/2009650001
 I was driving home from the beach (sandy hook national park, nj) when my service engine soon light came on. i used on star to remote diagnose the code, and was told it was an error in my transmission control module. i immediately called my nearest service center who inspected my truck and informed me that it was my transmission lines that had just simply 'corroded' and that my transmission has almost been running on no fluid. this was shocking considering i maintain good care of my 2002 envoy and had seen no sign of leaking transmission fluid but was informed it was somehow all over the bottom of my truck. they were able to fix the lines for a cost of 690 dollars, but i still feel that something is not quite right with this situation and have talked to others with similar issues. *tr
06/15/2009772001
 Transmission cooler line leak from corrosion on 2002 gmc envoy. had to do splice of corroded section and replaced with copper coupling. *tr
05/18/20091
 Vehicle will not move when put in drive or reverse from park position. after switching from 4wd to 2hi etc. it sometimes will engage and move. if in fact the vehicle moves it hesitates when making deep turns. for the most part it is stuck in drive and reverse. transfer case control module was a diagnosed problem by dealership in 2006. new part bought and installed by dealership. *tr
12/07/2008650001
 After pulling away from a stop light at a normal pace and reaching a speed of almost 50mph there was a loud clunk and a rrrrr sound coming from under the vehicle. the vehicle began to slow as the rpm's went up, all forward drive was gone. we almost got rearended... there was no warning at all that there was a problem or was going to be a problem ,it just broke..dealer says need new transmission.. apparently gm has a sun gear issue with this type of transmission.. *tr
11/10/2008920001
 My wife was driving our 2002 gmc envoy onto a local expressway when she tried to accelerate, she heard a loud noise from the engine/tranny area, then noticed high rpms and the transmission not shifting, she immediately pulled over. i came to her location and noticed loss of reverse and a whine coming from the transmission, the vehicle was towed to the local gmc dealer, that same day it was diagnosed as the sun shell. it appears that this is a common failure, i will be pursing this further with gm. *tr
01/05/200738000104/28/2005
 Tl*the contact owns a 2002 gmc envoy. the contact stated that while driving the vehicle it will randomly jump from 2 wheel drive to 4 wheel drive without warning causing the car to become idle and you must turn the car off completely. she took the vehicle into a local mechanic where he replaced the brakes and checked the wheels and stated that there was nothing wrong with the vehicle. she is also experiencing problems with the front passenger seat belt it locks when fastened. she took the car to the dealer and they informed her that it was no longer covered under warranty and any repairs made would be at the owner's expense. the vehicle is also experiencing exterior light failure, both headlights burned out within weeks apart and they were replaced at owner's expense. the failure mileage was 38,000. the current mileage was 86,000 (sc) updated 06/25/08. *cn the consumer also stated when driving past 70 mph, the vehicle would shake. the windshield wipers were replaced. the consumer stated the motor failed. updated 06/25/08
06/05/200756770106/05/2002
 56,779 mile and transmission failed on my 2002 envoy. dealer told me they had never saw this happen. we had just made a 2300 mile trip to the 'no man land' of colorado. the next day my wife came to a stop sign, said the car made a weird noise and would not go. no reverse or drive but crippled it home in low. was very surprised that the gm dealer would not back the transmission. $2,903.94 to replace with a 1 year guarantee which is about up and i refuse to drive on a long trip again in this auto. *tr
02/01/2008630001
 Tl*the contact owns a 2002 gmc envoy. while making a left hand turn at 5 mph, the vehicle made a whining noise and catapulted forward. the vehicle shifted gears and the speed decreased. the gears returned to normal and the contact was finally able to pull over. the vehicle was towed. the contact stated that the reverse gear failed and the first and second gears were barely functioning. the dealer stated that the sunshell in the transmission needed to be replaced in the transfer case. the previous damages led to the entire transmission needing to be replaced. the contact was informed that the vehicle was not included in nhtsa campaign id numbers 03v075000, 01v283000, and 01v334000. the purchase date was unknown. the current and failure mileages were 63,000.
02/03/200885000107/18/2002
 Normal driving conditions. exiting from parking lot, heard loud bang, car jerked, came to a complete stop. limped car home(1/2 mile). upon further inspection 2002 gmc envoy had no reverse gear. researching online shows 4l60e transmission, reaction sunshell & reaction sungears prematurely fail due to substandard parts. *tr
01/17/200860100101/01/2005
 2002 gmc envoy slt 60k...went outside to start car and had a loud swishing sound...tried to put in reverse...would not go...had to push out to get to work...extremely high rpms (3500-4500) to get through first...it also is jumping gears...if you try to go over 50 mph the car will redline...was told reverse reaction shell/sun shell gear...they had a bunch of names for it...was defective and failed...we never towed w/ this vehicle, never got stuck (the gm service pro stated that this was possibly the reason for failure)...the vehicle is maybe driven 10k miles a year...we have had nothing but problems w/ this thing...we already have replaced the clutch fan last year...and had numerous little problems since...all the posts i have read clearly shows there needs to be a recall...the prices i have seen on posts is ridiculous to repair the transmission...$2k to $3k...so for now it is sitting in my driveway...i will get the quote this week from my mechanic and am not looking forward to it. *tr
01/16/200861275112/15/2001
 Transmission failure at 60,000 miles due to defective parts installed during the original manufacturing process. *tr
10/23/2007442331
 Manufacture knew of inferior components within my vehicles transmission and did not issue a recall. existing service bulletin #00-07-30-022c dated dec 10, 2004 (within my warranty period) indicates same issue i experienced in my vehicle on 10/23/2007. bulletin title states replace reaction sun shell with more robust heat treated parts. this was known while my vehicle was still under warranty. failure happened after standard warranty expired. *tr
08/27/200756000108/25/2002
 Transmission sun gear failure on my 2002 gmc envoy at 56,000 k. gm is only picking up 50% of the $1747.00 bill.
08/22/200440000109/25/2003
 My envoy was put into park when i went to lock the front door. when i got out of the car and took two steps, it slipped out of gear and went rolling down (very slight grade) the driveway in reverse. i jumped in to try and stop it before hitting neighbors cars. i grabbed the steering wheel to pull myself in, which made the envoy turn to miss on car, then it threw me out, almost running over both of my legs with the front wheel. it then proceeded to hit a satellite dish, and air conditioning unit (which all but ripped the door off the hinges.) it then finally stopped after running through a fence and it rested with one wheel in the air on a mound of dirt. *tr
10/26/200668187102/01/2002
 Dt*: the contact stated while traveling 25 mph, the vehicle lunged, a whirring noise occurred, and the vehicle would not accelerate. it was driven home with high rpm's and low acceleration. at the contact's residence, it was noticed that reverse did not operate. the vehicle was driven to the dealership, but would not operate above first or second gear. the dealership determined the sun shell inside the transmission failed and the transmission needed to be rebuilt.
07/25/2006106/01/2005
 I own a 2002 gmc envoy with 49,000 miles. the transmission failed, did not want to shift from first, then no reverse when i left the destination. had towed to dealer. service manager stated she had a hunch what it was but had to get it in the shop first. sure enough, the sun shell failed and the transmission has to be replaced. called gm customer service in an attempt to get them to fix it at there expense since this is an regular occurrence with there trucks. have not heard back as of yet. seen many many many posts around the internet about this very problem. this should be looked into. *nm
06/07/200632000102/22/2002
 Have a 2002 gmc envoy, bought new. 8 recalls, ball joint and speaker failures. at 32000. miles, the transmission failed. dealer diagnosed with sun-shell gear problem, that was addressed by a gm repair bulletin. at 37000. transmission failed again. dealer advised the entire transmission needed replacement, but it was not related to his oct. 05 repair. contacted gm customer service, have a file number, but have not heard from anyone in 2 weeks. they advise that the gm area representative has not called anyone back, either the dealer or gm cs. ?? asked to contact him myself and was told i could not do that. asked where i could contact ceo rick wagoner and was told that no one can give out that info. a bunker in colarado maybe? *nm
05/12/2006840001
 Dt*: the contact stated while driving 10 mph, the sun shell gear fractured inside the transmission suddenly, causing the transmission to lose reverse, second and fourth gears. the vehicle was able to be driven to the dealership. repairs have been made to the vehicle.
05/13/200651000110/01/2002
 Went to back out of neighbor's driveway & there was no reverse gear; just like it was in neutral. after pushing the gmc envoy out of driveway, it would go forward, but was very strained to get into gear. i am the owner of his envoy since it was new; it has only highway miles; has always been serviced by the dealer from which it was purchased. *jb
09/15/200565000212/15/2001
 We own a 2002 gmc envoy sle, which was purchased new december 2001 by us. in september 2004 at approximately 65,000 miles the transmission went out. my wife was driving the vehicle at the time. the envoy has a automatic transmission and 2nd gear and reverse went out. my wife was able to pull over and we took it to the gm dealership where we purchased it. they would only pay 50% for the repair to the transmission and we had to pay the other 50%. less than 25,000 the transmission has went out again, having the exact same problem 2nd gear and reverse went out. again, my wife was on her way to work and was able to control the vehicle and safely get it stopped. we took the vehicle back to the gm dealership and they are now willing to replace the transmission, however we have to pay 50% of that amount. my question is why was it not replaced the first time? i paid approximately $576.00 for the first repair and now they want me to pay another $1500.00, which is over $2,000.00. why is another repair now not good enough to fix the problem? why should we have to pay for a defective transmission? i have been doing some research on the internet and have found at least 119 complaints for the exact same problem as we are having, with gm settling with others on a 50/50 basis. i am just thankful that both times my wife was uninjured and i believe strongly that someone really needs to investigate this problem. any assistance you might be willing to provide us would be most appreciated. *jb
09/25/200570000103/14/2004
 I own a 2002 gmc envoy with 70,000 miles on it. went to drive to the store and the truck would not move. there is a wining/ spinning sound coming from the transmission. reverse works, but all others do not. i have read quite a few forums on this topic and found this problem happens often. please let me know want i could do about this. *nm
03/16/200533000110/27/2002
 Drove vehicle as normal without warning and after i stopped (shutdown the vehicle and restarted it) there was no reverse gear or forward gear. vehicle was towed to the dealer where i was later told that the reverse gear had blown apart. damaged parts were replaced and transmission was flushed and refilled. i'm concerned now because the vehicle is out of warranty and it is sluggish or slipping when it makes a 1st to 2nd shift. will it require additional transmission work in the near future and huge $$ to repair? *nm
05/24/200568920102/08/2002
 I own a 2002 gmc envoy that i purchased new in february 2002. on 24 may 2005, the transmission failed with 68,920 miles on the odometer. there was no reverse or drive. the vehicle operated marginally in gears 3,2,and 1---enough to limp into the dealer. luckily, it didn't fail on the highway...or i might not be here writing this complaint! after tearing down/checking out the transmission, the technician found a damaged sun reaction shell and sun gear. the parts were replaced, along with new gaskets and seals, the transmission cleaned and power flushed. the total cost of this effort was $2277. :-( :-( in doing a bit of research on this particular failure, i've discovered other gmc envoy, oldsmobile bravada, and trail blazer owners have been victims too. according to one of them, who works in the service department of a gm dealer, the repair instructions state the material used in the sun shell of the 02 blazer, envoy, and olds bravada wasn't able to withstand the heat in the transmission, causing it to strip (which is exactly what happened in my vehicle). he goes on to state. that in vehicles from 2003 on, gm used a more heat resistant material in the transmission that reduces the likelihood of the sun gear failure. i'm writing this complaint because i believe the root cause of my transmission failure...and those experienced by other owners... was due to faulty material...which the manufacturer knew about...yet didn't inform the consumer about. i've never owned a vehicle, gm or otherwise, where the transmission failed at a young 68,000 miles! help please! *nm
08/02/200548250105/01/2004
 Driving down a 4 lane interstate at 65 with cruise on, the transmission starts to wine and loses acceleration. moved over to slow lane proceeded to get the next 35 miles home in 3rd gear (noise was make in d). upon arrival home-found out that the envoy no longer has reverse. dealer believes there is a problem with the sun plate in the transmission. this envoy only has 48,300 miles. dealer believes this is the problem because he has seen this before and knows there is a problem. why is there not a recall on this part or problem?? this should not be happening with any vehicle that has such low miles. *nm
09/07/200429415105/01/2002
 Dt: contact stated transmission went out at around 29,415 miles. transmission failed while driving at 20 mph, and leaving him stranded. transmission has been repaired. the service dealer replace the sun gear, and stated this was a known problem within the gmc envoy. *ak *jb
06/25/200544894111/22/2001
 Backing up my driveway and heard a clunk followed by a high pitched whining noise. following this, i had no reverse and the transmission failed.
06/20/200573866110/16/2002
 While taking off from a complete stop, the transmission lunged and suddenly i had no drive or third gear. i was able to coast to the side of the road put the truck in park but the gear would not re-engage. the truck was turned off and cranked again, still no difference. however, i did have second and first gear. while driving in second gear at a very low speed the vehicle was transported to dealership. service personnel advised the transmission was gone and would cost $3400.00 to replace. he stated the gears were broken off inside the transmission and the oil was burnt. he advised the vehicle only has 36,000 miles / 3 years warranty on the power train - transmission, which ever came first. i have less than 74,000 miles on my truck.
06/10/2005865631
 Was hearing a clunking noise when shifting from park into drive. eventually went to shift into drive and it felt like i ran over something, but nothing was there. then the truck would not shift into second or fourth and lost reverse all together. was told the transmission is blown.
05/28/2005440441
 While driving the vehicle, i stepped on the gas and it only increased the rpm and did not provide any acceleration while chaging lanes. it then later kicked in and i got acceleration. when i parked the vehicle to see check things out, i was unable to use reverse to get out of the parking space, reverse no longer worked. after the incident occured, i checked out owner forums online to find that many owners have had similar problems.
06/09/200570100105/16/2002
 While cruising at highway speed (65 mph) my 2002 gmc envoy suddenly made a loud crunching noise and lost forward motion. the engine revved up, then down, then turned off (while multiple dash warning lights came on simultaneously). i managed to get the vehicle off the road without the help of power steering or brakes, and after a few minutes i started it back up and found i could drive off only at low speed on the shoulder, though there was continued noise from the underside of the car and it was erratically performing. i immediately brought the car to a mechanic who discovered that internal parts in the transmission had failed. the mechanic also informed me that there is a gmc technical service bulletin about this and it is a common/frequent problem. the tsb recommends replacing the internal transmission parts. the mechanic says that replacing the transmission is the only safe thing to do. the local gmc dealer service department says that despite this being a known issue with these transmissions, if you are out of warranty (i am) gmc will not address the issue. catastrophic transmission failure is bad anywhere, but on the interstate can be deadly. if anyone had been following me more closely we would have certainly caused a pile-up.
01/03/20042800001/09/2002
 On dec. 3, 2003, i took my 2002 envoy into the dealership because i was experiencing serious shifting issues. repeatedly my car would shift while i was driving between 2wd and 4 wd hi. the car would also would make chugging noises. furthermore, the vehicle shifted between gears on its own while i would be making sharp turns such as into a parking space. while in park, if i did not have my foot on the brake petal, the car would jump forward. the car almost jumped through a store front window. the dealer could find nothing wrong with my car. i told them to keep it another day, that there was something seriously wrong with the car. the dealer kept the car another day, and still found nothing. on december 31, 2003, i continued to experience the aforementioned problems. knowing that it was new year's eve and that the odds of there being any competent staff at the dealer was slim, i held onto my car and planned to take it to the dealer after the holiday. on january 3, 2003, i was driving and my car died for no reason. i was not accelerating nor braking. thank goodness the road i was on was not very busy as i would have created an accident. the situation was very dangerous and very frightening. i called roadside assistance to tow my car to the very dealer that could not find anything wrong with hopes that they would find something wrong. roadside assistance, by the way, told me i needed a flatbed truck to tow my truck to prevent damage as did the dealer. roadside assistance showed up without a flatbed - so i made them leave and bring back a truck with a flatbed. two hours later, my car was finally at the dealership. the dealer flat out told me i don't know if we are going to find anything wrong with your car. apparently cars that stall in the middle of the road is perfectly acceptable for this dealership. the dealer told me he could not get me a rent-a-car for two days. the car is still at the dealership. *la
09/28/200339800011/26/2001
 I have had multiple electrical and transmission problems with my 2002 gmc envoy. yesterday my family and i were driving on interstate 80, while on cruise control, the suv shut off. i barely was able to get to the side of the road. i almost hit a vehicle getting off the highway since i lost power steering. after 15 minutes of not starting, it finally started. i took the vehicle to the dealership and they couldnt find anything. i have written many letters and tried to convince gmc that this suv is not safe.
1
 Transmission slips gears while driving. dealer will repair the transmission, but has not informed the consumer exactly what component failed. *ak
06/08/200311000203/26/2002
 My 2002 envoy exhibits the same symptoms as my previous gmc jimmy. it has a hesitation on acceleration that fails to shift from 1-2 properly. this only occurs when the car is cold and only for a mile or two. however , it causes severe loss of power and acceleration capability. obviously other people have this problem but it does not appear that there is a solution. it always works by the time it gets to the dealer, of course. *nlm
02/05/20032200010/26/2001
 Transmission does not work properly. have had it repaired twice, but still vibrates, and fails to move vehicle forward at times, from a dead stop. is very dangerous at intersections where moving quickly is imperative. also wiring problems which operate various remote instruments (mirrors, seats, etc.) fear of fire. rear door latch was replaced - clicks locked/unlocked while driving. seats move on their own while driving. *nlm
1
 Consumer was unable to shift the gear from park to drive. *jb
02/09/20037100
 Complaint is for 2002 gmc envoy. on three occasions, this truck stalled out while in motion, the last time at 55 mph on an interstate highway. on three occasions, the transmission in this vehicle switched, of its own accord, from 2 wd to 4 wd (low) nearly casusing accidents on two occasions. i listed the most recent occurrences of these problems below.
11/18/200207/01/2002
 Transmission on cold start stays in first gear. left rear brake appear to have hung up and is burning. dt
02/01/2002208/01/2001
 All these problems come and go, somtimes depending on the outside temperature. some of it got fixed and came back again. the major problems are that the vehicle shuts down without any warning - no engine no electric nothing-, so its even not possible to call on star! the other thing is that the transmission start to shift gears while driving on a leveled raod at consistant speed. all this items got fixed and come back after a while. dt
06/01/2002404/01/2002
 Engine stalls for no apparent reason. i have contacted dealership and they can find nothing wrong. i advised them of a recall regarding the fuel system that may affected the problem. says they replaced the fuel filter. the first time i took it in, they said that it was the ignition switch. also transmission makes a very loud noise when attempting to take off at times. it sounds like an engine fan that will not go off. there is a major lost of power when this problem is occuring. i bought this car as a program car, with @ 11, 000 miles on it already. i've had problems with it from day one. i have only had it a few months. i am extremely irritated with this engine problem. this is extremely unsafe. dt
09/26/20029420107/01/2001
 Consumer states the vehicle will slip out of overdrive and into first gear, which results in the vehicle losing power. there is a warning light that will come on which will read reduce engine speed, the dealer replaced the pcm/vcm but this did not correct the problem, front end squeaks when turning and driving, . mr *nlm *dt
02/13/2002202/13/2002
 While towing vehicle in neutral, transmission slipped out of gear and a fire started in transmission area. contacted dealer who was not willing to do anything.*ak consumer states that the transfer case shift module failed to engage neutral, consumer had brackets and wiring installed to activate the brake and tail lights when being towed, there is a recall, 01v334, regarding transfer case control module problems, however this vin is not included. *slc
03/02/200210/01/2001
 We purchased new vehicle october 2001 and within 4 months began experiencing problems beginning with a noise within the steering wheel. dealer technician replaced defective airbag module. the next month, my new envoy has been to the dealer 4 times for the same problem of 1) wind and/or whistling noise at speeds above 45mph, 2) vibration noise coming from transmission when vehicle reaches 3rd gear , 3) when vehicle has reached 3rd gear and previous noise begins, there is also a vibration felt in the acceleration pedal. on the first trip to dealer for these problems, technician only agreed with the wind noise. discovered the front side mirrors were the cause. replaced both mirrors---problem still exists, however, he can't hear them. explained it was the nature of the vehicle. he also repaired the weatherstripping which had fallen off the right rear door. he advised that he did not hear any noise in the transmission area or in the gas pedal. we took to another dealer who had a technician test drive the vehicle and advised that there was both a noise in the area of transmission and a vibration in the gas pedal. returned to the dealer who originally was doing repair work and had him ride with me. at this time, he heard the noise i was complaining about and advised that it was coming from the heat shield at the catalytic converter. made an appointment for repairs, picked up the vehicle and later the same day, the noise returned. took vehicle back, technician said he didn't hear any more noises. waited 2 weeks, made another appointment to return vehicle for right rear door rattling , and heat shield noise which had become non stop. at this time, they replaced the weatherstripping on the door and again adjusted heat shield by making a cushion so that it would not vibrate against the exhaust manifold. this did not resolve the problem, as it still vibrates so as i can still feel stress through the gas pedal on the transmission when reaching speed.*
01/31/2002102/01/2001
 Mirrors 'wander' every time vehicle is unlocked, fail to return to settings creating an unreasonable danger to the occupants of this vehicle as well as other vehicles when changing lanes or merging into traffic due to lack of visability of the area behind the vehicle. transmission failed on a slight incline with parking brake engaged and transfer case locked and in 4wd and transmission in park - vehicle began rolling backwards down the slight grade. there was a recall for this problem - campaign was completed at dealer, but fix is unknown to the owner.
10/29/2001607/01/2001
 Transmission does not seem to downshift; loud fan noise with loss of power; hard shift into gear from start; missing rear seat latch to hold down seat and easily wobbles when shaken; hook for latch is present but no latch present seems to be design flaw. *ak
08/15/2001107/01/2001
 While driving, car suddenly shut down completely with no warning. second problem: transmission failed while towing 3300 lbs or less on two separate occasions. *ak
07/20/2001405/01/2001
 Service engine light illuminates, engine cooling fan engages, engine power greatly reduces and transmission shifts improperly. loud noise from computer controlled engine cooling fan. vehicle will not accelerate or shift properly when driving with fault. fan clutch replaced, computer programming changed with no success of fixing problem. gmc refuses to buy back vehicle. dealership indicates this problem is occurring on all 2002 gmc envoy's at varying levels mine being worse case. vehicle is unsafe for use in any traffic situation as the problem manifest itself rapidly with severe loss of engine power, loud noises from engine and poor shifting and acceleration.*ak
POWER TRAIN - AUTOMATIC TRANSMISSION - CONTROL MODULE (TCM, PCM)
04/17/2006250001502/02/2002
 Continued electrical problems with 2002 gmc envoy. such as on-star telephone along with radio/cd player, all four doors failing to lock or open including the back hatch. service air bag light and engine check lights coming on. reprogram engine/transmission module, also telephone antenna replaced, short in wiring located due to rubbing/pinching during construction, replaced wiring harness. hundreds of dollars required to identify short in wiring. transmission operates sluggish until warmed-up vehicle feels as if the brakes are on until it has moved several blocks. *nm
07/07/200432678212/30/2001
 While driving at 65 mph engine shuts off; would not restart first try. would start a little later. went to dealer, reprogrammed pcm with latest calibration update. second time happened at 70 mph. *ak
03/05/2004367002006/30/2001
 Pcm defect. *ak
4
 Consumer states while comiing down a hill pcm shorted out. as a result, driver lost all electrical functions. steering wheel got really stiff. brake pedal became hard to press.
POWER TRAIN - AUTOMATIC TRANSMISSION - GEAR POSITION INDICATION (PRNDL)
01/01/200206/01/2001
 When applying brake to release vehicle gear out of park, the gear shift does not release. stuck in park! have to tap the brakes many times to get a release of the gear shift. sometimes it works first time other times takes many attempts. told at dealer that it is the sellenoid. have ordered part from dealer twice and still no part. dealer at first denied being able to reproduce. then, finally admitted other vehicles had same issue.*ak
POWER TRAIN - AUTOMATIC TRANSMISSION - LEVER AND LINKAGE - COLUMN SHIFT
 Within two weeks of purchase four wheel drive warning illuminated on console. owner took vehicle in to have it serviced. before this 4-wheel drive system engaged. dealership failed to duplicate failure. before being sold dealership replaced transfer case axle control sensor. last repair was for transfer case shift control switch. please describe details. *ak
01/31/2002102/01/2001
 Mirrors 'wander' every time vehicle is unlocked, fail to return to settings creating an unreasonable danger to the occupants of this vehicle as well as other vehicles when changing lanes or merging into traffic due to lack of visability of the area behind the vehicle. transmission failed on a slight incline with parking brake engaged and transfer case locked and in 4wd and transmission in park - vehicle began rolling backwards down the slight grade. there was a recall for this problem - campaign was completed at dealer, but fix is unknown to the owner.
10/01/20010
 Vehicle is squealing on front passenger side. also, tranfer case is defective. *ak
POWER TRAIN - AUTOMATIC TRANSMISSION - PARK/NEUTRAL START SWITCH
01/31/2002101/01/2002
 My vehicle rolled backwards down a hill and crashed into a waterfountain and a tree in my front yard. backing out of my garage i stopped quickly after just exiting my garage on a slope of about 6% grade. i had spilled coffee, i put the vehicle into park and stepped out when the car abruptly rolled backward. both of my children were strapped in their seats and i tried to leap back across the drivers seat with my legs hanging out the door. we traveled 50 feet before hitting the waterfountain and tree. the rushing water from the fountain sounded like fule ready to explode. i was taken to the hospital with an injury to my right leg. i informed gmc the following day, feb 1st. on feb 7th i received a response to my complaint from roger lewis, customer relationship managert informing me that his investigation revealed no evidence of a product defect. i became aware that my vehicle had been recalled for this very problem and that another recall, not including my vehicle vin, but those made two months later have been recalled for a similar problem. i called gmc informing them and they were unwilling to examine the case further. i am concerned that gmc is ignoring a likely unfixed transmission problem which is potentially dangerous. *ak
POWER TRAIN - AXLE ASSEMBLY
11/11/200317000110/28/2001
 Collapse of the right front lower axe. and the dislocation of the right wheel.*ak
POWER TRAIN - AXLE ASSEMBLY - AXLE SHAFT
01/02/2008106000107/04/2003
 I was driving along interstate 75 at night with my 3 year old, 16 year old, and 18 year old nephew returning to college after winter break on jan. 2,003. we were left stranded on the side of the highway, after we almost wrecked. the gears were jumping back and forth from 2 wheel to wheel drive. i took to a local gm dealer and they told me that it would costs me 2500 to repair-the problem the front differential. i contacted the 1800 gm service line and they said that they would not be assisting with repairs due to mileage. i asked around at different auto repair and transmission shops and they said that gm knows they have a problem with the differential in envoys, trailblazers, and isuzus. even if the problem gets fixed, im told there is no guarantee that the problem will not happen again until gm addresses the actual problem with the differentials. i believe my gear problem caused the differential to fail. meanwhile i am stuck with a car that i have to pay for another year and a half on. it is really an inconvenience to me. i cannot afford the repair, the car sits in the driveway. im behind on my car payment, having to rent a car to drive to work. gm should be held accountable. other problems include the clutch fan going out, costing me over $500 to repair on my own. gm refused to help. this went out at 33,000, shortly after purchase. i am really burdened right now and don't know what to do. *tr
POWER TRAIN - CLUTCH ASSEMBLY
01/17/200860100101/01/2005
 2002 gmc envoy slt 60k...went outside to start car and had a loud swishing sound...tried to put in reverse...would not go...had to push out to get to work...extremely high rpms (3500-4500) to get through first...it also is jumping gears...if you try to go over 50 mph the car will redline...was told reverse reaction shell/sun shell gear...they had a bunch of names for it...was defective and failed...we never towed w/ this vehicle, never got stuck (the gm service pro stated that this was possibly the reason for failure)...the vehicle is maybe driven 10k miles a year...we have had nothing but problems w/ this thing...we already have replaced the clutch fan last year...and had numerous little problems since...all the posts i have read clearly shows there needs to be a recall...the prices i have seen on posts is ridiculous to repair the transmission...$2k to $3k...so for now it is sitting in my driveway...i will get the quote this week from my mechanic and am not looking forward to it. *tr
06/01/2004500206/23/2001
 Consumer had all of the weather proofing on the vehicle replaced by the dealer as well as the clutch assembly . *ak the fan clutch was replaced, the air bag indicator light came on. the consumer was told that nothing could be done if the light wasn't on at the time. the plastic trim from the seat belt broke, the seat belt failed again, the transmission would drag, the engine light was on and made a grinding noise,the drivers side tire was loosing pressure, the passenger inner door seal leaked, the clock on the radio would reset itself, the drivers side seat belt would lock up when the brakes were applied they would skid and pull to the right. *sc *jb
POWER TRAIN - DRIVELINE - DIFFERENTIAL UNIT
01/02/2008106000107/04/2003
 I was driving along interstate 75 at night with my 3 year old, 16 year old, and 18 year old nephew returning to college after winter break on jan. 2,003. we were left stranded on the side of the highway, after we almost wrecked. the gears were jumping back and forth from 2 wheel to wheel drive. i took to a local gm dealer and they told me that it would costs me 2500 to repair-the problem the front differential. i contacted the 1800 gm service line and they said that they would not be assisting with repairs due to mileage. i asked around at different auto repair and transmission shops and they said that gm knows they have a problem with the differential in envoys, trailblazers, and isuzus. even if the problem gets fixed, im told there is no guarantee that the problem will not happen again until gm addresses the actual problem with the differentials. i believe my gear problem caused the differential to fail. meanwhile i am stuck with a car that i have to pay for another year and a half on. it is really an inconvenience to me. i cannot afford the repair, the car sits in the driveway. im behind on my car payment, having to rent a car to drive to work. gm should be held accountable. other problems include the clutch fan going out, costing me over $500 to repair on my own. gm refused to help. this went out at 33,000, shortly after purchase. i am really burdened right now and don't know what to do. *tr
12/19/2001110/01/2001
 We purchased a $33,000 new vehicle in october. we immediately noticed the passenger front seat seatbelt locks then starts to tightening and never unlocks. i brought the issue to the service department, the new car sales manager, and gmcs attention. dean cloud in bentleys service department told me that the seatbelt is designed to lock so a childs safety seat can be put in the front seat. i showed him that the visors in the car and the users manual say never put a car seat in the front with the air bags. he said that the passenger must unhook the seat belt every few minutes then reconnect it. i find this unacceptable. the dealership is putting the passengers in the vehicle in an unsafe and illegal situation by telling them the only solution is to disconnect the seatbelt while the vehicle is in motion. the seatbelt in its current condition is choking the passengers, which is also unsafe. the seatbelt needs to be repaired or replaced. the differential unit had to be replaced. the bearings did not have enough tourqe (that is wht the dealer told me).*ak
POWER TRAIN - MANUAL TRANSMISSION
05/25/20021
 Consumer states when starting vehicle, vehicle shifts to 4 wheel drive. cause is unknown. please provide any further information.*jb
POWER TRAIN - TRANSFER CASE (4-WHEEL DRIVE)
02/06/200695000209/05/2003
 Tl*the contact owns a 2002 gmc envoy. the air bag light is constantly illuminated and only dims when the vehicle is turned off. while driving 55 mph, the contact attempted to use the 4 wheel drive, but it would not work. the indicator light remains illuminated; however, none of the 4 wheel drive levels work. the vehicle was taken to the dealer and they stated that the vehicle was not included in nhtsa campaign id numbers 01v283000 (power train:transfer case (4-wheel drive)) and 02v222000 (air bags). the current mileage was 127,000 and failure mileage was 95,000. updated 01-14-08. *kb the consumer stated the 4-wheel light only illuminated when the vehicle was started. updated 12/12/07. *jb
10/16/200643044108/01/2002
 Dt*: the contact stated while driving various speeds, the 4-wheel drive indicator light illuminated, and the vehicle stopped as if the brake was applied when the accelerator pedal was released. also, a smell was coming from the brakes and the vehicle accelerated without warning. the vehicle was driven to the dealer who determined the transfer case control module needed to be replaced.
11/23/200550000108/16/2002
 While driving my vehicle and the 4 wheel drive switch is in the off position, my vehicle will engage into 4 high and the 4 low light flashes like it's trying to go into 4 low. it will keep switching back & forth from 4hi to a4wd and then go off. this has happened a couple times now. another time i was turning into a parking space and then my steering wheel became very hard to turn, my car was in 4hi with the 4 low light flashing but the switch was off. *nm
08/01/2005308/31/2002
 I have a 2002 gmc envoy sle vin # 1gkdt13s322480641 purchased and serviced by by malouf in north brunswick, nj. i have complained on two occasions that the 4 wheel drive light switch jumps from 2-high to 4-wd and continues to blink. while this is happening there is a faint scraping sound from under the vehicle and than the vehicle slows down to a gradual complete stop. it feels like the brakes are being applied. there also a faint odor of burning brakes. this 1st happened around august 1 2005 and than again in oct 2005 two times the 1st time the dealership re- programmed the computer and up dated it, its was ok for a little while. than it happened again in oct. they told me there was nothing they could see and that everything was working the way it should be. there is something very wrong with this vehicle and im afraid this is going to happen at higher speeds. please get back to me as soon as possible. *jb
01/07/2005306/24/2003
 My vehicle is a 2002 gmc envoy. i have had 3 incidents with the 4 wheel drive system in this vehicle since december 2003. the newest feature with these vehicles, as with the cheverolet trailblazers is the automatic 4 wheel drive system. this system allows the driver to put this lever in and the vehicle will be in 2 wheel drive and will switch to 4 wheel drive when road conditions are a necessity for 4 wheel drive. my vehicle's 4 wheel drive system broke in december 2003. it was reported to me from alaska sales and service who repaired the vehicle that the front differential had to be replaced due to the 4 wheel drive system. then there was a leak of some fluid under the vehicle noticed april through may 2004. the vehicle was in the shop at alaska sales/service again and a transfer case was replaced in the vehicle. come winter in 2004, my 4 wheel drive needed to be used again due to weather in alaska. my vehicle was in for a major checkup on dec 14th, 2004 and i was told the 4 wheel drive system was in good shape. i had the vehicle back in the shop within 2 weeks for a loud noise in the 4 wheel system. again the vehicle was in the shop and another transfer case was replaced. my major complaint to the federal consumer complaint system is that this vehicle is a 2002, and this vehicle has been in the shop for the same problem more than 3 times under the 3 year new car warranty. i feel that the general motors corporation should buy this vehicle back or purchase a new vehicle for me due to the problems i have had to endure. i am in the process of finding a lawyer in alaska that will support the automobile lemon law. *jb
12/31/2004440002
 Transfer case( 4-wheel drive) wasn't engaging. vehicle was inspected by a dealership, who indicated that the transfer case shift control module was defective, and needed to be replaced. they also indicated that the part had to be ordered. a week later when the consumer contacted the dealership to inquire about when the part will arrive they were informed not until march due to the part being being re designed. the part # was 12590220.*ak
10/28/2004207/19/2004
 Failure of engine cooling system and four wheel drive system. *jb
09/07/20042
 While driving at a low speed and turning to the left, the four wheel drive engaged. the dealership replaced the selector switch twice for the four wheel drive. *jb
03/17/200470800412/14/2003
 Our 02 gmc envoy randomly shifts the transfer case into neutral while driving causing a no power situation in traffic. this has put my wife and child in danger on more than one occassion.
1
 While driving 40 mph vehicle jolted and slipped into another gear without consumer shifting gears. vehicle was serviced, technician determined that transfer case module needed to be replaced. *ak
12/28/200337500102/28/2002
 Transfer case: while driving at highway speed of about 65 mph with the transfer case swtich set to a4wd the trransfer switch without any input or operator control switched to 4hi (both the switch position and indicator light) and the 4lo indicator light was flashing amber indicating the transfer case was attempting to swtich into 4lo. this has occurred aproximately 6 times previously at various speeds, while driving striaght or conducting turning maneuvers; but only when the engine is warm. the latest incident on 12/28/2003 (prompting this complaint) occurred after the dealership completed the remedy specified by service bulletin 02-04-21-002a on 12/26/2003.*ak
10/18/2002329106/29/2002
 Gmc envoy 2002 sle xl purchased in the month of june and started having problems in oct. the vehicle would shift in and out of 2wd and 4wd on it's own and on occasion it would lock the wheels also. problem mostly occured when making turns. stated problem to dealer (10/18/02) - dealer replaced 4wd selector switch (reason: internally shorted). had problem again in month of feb. '03. brought vehicle back to the same dealer and explained problem again (02/21/03). dealer replaced 4wd selector switch again. reason why i'm filing this complaint is because i feel this vehicle is not safe. i also realized that i'm not the only one experiencing these same problems. my hope is that gmc will take notice and correct this problem quickly.
02/13/2002202/13/2002
 While towing vehicle in neutral, transmission slipped out of gear and a fire started in transmission area. contacted dealer who was not willing to do anything.*ak consumer states that the transfer case shift module failed to engage neutral, consumer had brackets and wiring installed to activate the brake and tail lights when being towed, there is a recall, 01v334, regarding transfer case control module problems, however this vin is not included. *slc