Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
POWER TRAIN
00773100171904l60e, 4l65e replacement valve body gaskets does not seem to fit. *tt10/27/2005
3276100134964l80e output carrier thrust washer changes. *tt04/20/2005
305401/01/200410009665Replacement flexplate may have larger bolt holes than the original flexplate. *tt10/14/2004
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
990730016A10/01/2002990730016B10007838Diagnostic information for intermittent transmission downshift, slip, busy/cycling tcc or noisy cooling fan. *tt07/12/2004
0208601/01/2004100077824l60e, 4l65e intermittent neutral from a stop or steady speed. *tt07/12/2004
0159901/01/2004100072374l60e, 4l65e forward and low reverse waved steel clutch plate appearance change. *tt06/04/2004
00822B01/01/200400822C10005474No 2nd, no 4th and no reverse. to include 2004 light duty automobiles and trucks equipped with 4l60e or 4l65e automatic transmission. *tt02/27/2004
020421005A02/01/200302042100510001110Slips in 4-wheel drive, noise, vibration, leaks, hot odor. *tt04/15/2003
02042100506/01/2002634905Some vehicles will not move when 4-wheel drive is requested, noise, shudder, poor performance, transmission / transfer case slips, transmission will not upshift, slips in 4-wheel drive. *tt10/10/2002
POWER TRAIN - AUTOMATIC TRANSMISSION
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
3259C3259E100055144l80e, 4l85e whine noise in first and second gear. *tt03/01/2004
010730038B10/01/2005010730038C10005162The 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. *tt02/09/2004
03073000502/01/200310001115Service engine soon indicator illuminated, transmission slips, engine flare, delayed 2-3 shift, shifts missing, no shift, diagnostic trouble codes p0730, p0756, p0757. *tt04/15/2003
02073001103/01/2002631670Subject regarding, 2001-2002 chevrolet and gmc c/k pickup and utility models, diagnostics for possible gear indicator concerns. *jg06/10/2002
02073001103/01/2002631259Subject regarding, 2001-2002 chevrolet and gmc c/k pickup and utility models, diagnostics for possible gear indicator concerns. *slc05/21/2002
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
POWER TRAIN - AUTOMATIC TRANSMISSION - CONTROL MODULE (TCM, PCM)
0148301/01/200410005496Vehicle has no pcm (power train control module) communication with tech 2. sit bulletin 1400427. *tt03/01/2004
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
04220204/22/2002636575Subject regarding kinked transmission oil cooler lines. *tt11/10/2002
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
POWER TRAIN - AXLE ASSEMBLY
40304030A10021676New design front axle side bearing adjusters. *kb06/15/2007
30013001A10008872The service information and owners manual do not show a service interval for the 8.6, 9.5, 9.75, 10.5, and 11.5 inch rear axles with or without g80 (locking differential). *tt 2006 all general motors light duty trucks, vans and utilitie08/25/2004
030419001A09/01/2004030419001B10004717Use of synthetic front axle lubricant for 4wd vehicles sold in cold weather climates. *tt this bulletin replaced previous bulletin dated 10/01/2003. *tt01/02/2004
03041700106/01/2003030417001A10002853Whine noise from rear axle. *tt09/26/2003
03041800306/01/200310002854Revised wheel drive shaft inner joint and seal replacement. *tt09/26/2003
030417001C10/01/2005030417001D10001136Whine noise from rear axle. *tt update. *tt04/17/2003
POWER TRAIN - DRIVELINE
33003300A100135724wd models with noise, vibration on dry pavement. *eh04/21/2005
03041900308/01/200310012557Fluid leak from front of vehicle add teflon tape to front axle vent plug threads. *eh03/07/2005
POWER TRAIN - DRIVELINE - DRIVESHAFT
04049500103/01/200410008653Revised wheel drive shaft nut torque specification. *tt08/12/2004
POWER TRAIN - MANUAL TRANSMISSION
01073003611/01/2001627912Service engine soon lamp illuminated, incorrect transmission shifts, poor performance of engine, transmission slipping. *yh02/26/2002
POWER TRAIN - TRANSFER CASE (4-WHEEL DRIVE)
34243424A10017299Electronic transfer case unable to complete shift. *tt11/02/2005
338910016707Four wheel drive inoperative and the 4wd service light will illuminate. diagnosis may reveal that the atc fuse could be open, possible dtc c0308, or various u codes may be set. the encoder motor may also be shorted or the tccm may be dama09/28/2005
352610016558Intermittent service 4wd light comes on with diagnostic trouble code (dtc) c0306 or c0308 stored in tccm. *tt09/22/2005
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
02042100404/01/2002634899Some customers may comment on the service 4wd indicator illuminating with diagnostic trouble code b2725 set. *tt10/10/2002

Consumer Complaints


Fail datemilesoccurencesPurchase date
POWER TRAIN - AUTOMATIC TRANSMISSION
08/24/200664000101/24/2002
 My 2002 chevrolet suburban experienced premature transmission failure. the total cost for the repair is $3000.00. the truck has never towed a thing, the car is only used to drive children to school etc. it has 64,000 miles and just stopped on a turn in the middle of an intersection. *jb
06/15/200324000107/15/2002
 At 24,000 miles the transmission on our 2002 suburban failed without warning while driving. it had to be towed to the dealer for a transmission replacement. *jb
01/20/200646091109/14/2001
 My 2002 suburban had a transmission failure at 46091 miles that required me to purchase a new transmission at a cost of $3200.00. we were almost in an accident because the vehicle stopped shifting while at highway speeds and barely made it safely to the shoulder. there was no warning or engine light and the transmission appeared fine although it was beyond repair. the fluid level was good and it was not burned. chevrolet says there is nothing they can do as the warranty is for 3 years and 36000 miles. *nm
01/01/2006104000106/01/2002
 January 1, 2006 just after leaving my home, i stopped at a stop sign and when i accelerated from a stop a loud clunk and then a constant whinning sound. i drove the vehicle home the one mile from the stop sign in first gear, the transmission would not shift to second, after returning home the car would not go into reverse either. transmission failed at 104,000 miles. repair shop says the transmission shell and other components of the transmission was cracked. the transmission shop states that they have had several customers that have experienced the same problem with this transmission. they would consider this to be a common problem with this type of transmission, a bad design according to the repair shop. *nm
05/08/200563112/20/2001
 Transmission does not shift properly in 1st and 2nd gears
03/12/20031
 Road side assistance complaint. mr the consumer stated the vehicle would not start, there was a problem with the transmission and the box for the 4-wheel drive. *jb
10/27/200443000104/02/2002
 Sudden, without warning, transmission failure. no explanation given by dealer other than internal failure with recommendation to replace transmission. only 45,000 miles and well maintained vehicle. *ak
04/01/200468000205/01/2002
 At 16000 miles the transmission failed. the vehicle was repaired under warranty but the same problem recurred while driving 50/55 mph. the consumer stated that the sun gear and planetary gear failed. the consumer was able to drive the car home in 1st and 2nd gear. the vehicle was not taken to dealership. *nm *nm
06/15/200315
 When driving at any speed vehicle lost acceleration, causing the driver to pull off the road. consumer took vehicle to dealership, and mechanic determined that transmission failed. *ak
05/22/2002
 When the consumer apply his gear shift to park to drive. there is a loud ticking noise coming from underneath and the vehicle willnot move. when gear shift is place in drive or reverse.
POWER TRAIN - AUTOMATIC TRANSMISSION - COOLING UNIT AND LINES
03/25/200201/01/2002
 Transmission oil leaking onto the exhaust system creating a burning smell and oil all over the transfer case and transmission as well as the exhaust pipe.*ak
POWER TRAIN - AUTOMATIC TRANSMISSION - TORQUE CONVERTER
08/01/200543391108/26/2004
 After numerous other repairs to this vehicle, it started whining through the first few gear changes. the gm shop said that the torque converter went out and they had to overhaul the transmission. it is still in the shop because after they put everything back together, the whining noise is still there. after 11 days and three tear downs and rebuilds, the mechanic is at a loss as to what is wrong. *jb
POWER TRAIN - AXLE ASSEMBLY
04/10/200440000401/01/2002
 Noticed noise and vibration when in four wheel drive. chevy dealer inspected and determined that a plastic plug on front differential had failed and drained all of the oil from differential resulting in failure. chevy has re-designed the faulty part (obviously as a result of many failures). front differential assembly was replaced. car was repeatedly returned for service because of no 4x4 function. eventually, transfer case was removed and inspected only to discover that clutches were completely destroyed from differential failure. transfer case assembly was replaced. suburban had 40,000 miles upon initial failure (4,000 out of warranty). chevy sent owner a check for $600. reccomend that all suburban 4x4 owners immediately replace the plastic plug with new design (approx $23 part) or expect failure. chevy will not accept reponsibility. old parts are available for inspection.
POWER TRAIN - AXLE ASSEMBLY - AXLE SHAFT - SEAL
04/18/20022075303/01/2002
 Oil leaks! ist oil leak greenish fluid leaking from under engine skid plate. had that repaired at billings chevrolet, and it is still leaking. technician said axle seal was leaking. 2nd leak, engine oil leaking onto exhaust pipe which is giving off burning smell in cabin. repaired once, and it is still leaking. service was done at anderson chevrolet, menlo ca. ****dims 11 ivoq entry posted after 12/12/02 cut-over to artemis****761300. *ak *jb
POWER TRAIN - AXLE HUBS
06/01/200541000312/15/2001
 Dt: 2002 chevrolet suburban, anti lock brakes failed to stop the vehicle when driving at slow speeds, when consumer pressed on thek brakes the vehicle slowed down , but did not completely stop the vehicle, consumer has to pump the brakes to get the vehicle to stop, consumer took vehicle to the dealer,who told him that the problem was that the hub assembly sensors needing replacement. the dealer said that vehicle was no longer under warranty, air conditioning core leaksed in the front and the rear of the vehicle. those were the only known problems with the vehicle at this time. *ak
POWER TRAIN - DRIVELINE - DIFFERENTIAL UNIT
11/03/200433981108/26/2002
 We had to have pinion & side bearings replaced and they reconditioned differentials. this is a family vehicle that does not pull horse trailers or a boat! *jb
04/09/200312700105/01/2002
 Driving on freeway along carpool lane when the car ahead of us stopped to move to the next lane and we all had to stop. i had a good distance from the vehicle in front of me when i hit the brakes. the brakes went all the way to the floor(literally) but still didn't stop until i crashed into the car in front of me. the abs brakes feels unusual. i also hear a clanking sound on the differential every time i have to decelerate and go back to normal speed or just moving from park to reverse or from neutral to reverse. *nlm
12/20/20021500010/30/2001
 This vehicle has been to a dealer for the 2nd time now to rebuild the front differential and it has only 22000 miles on it.
10/25/2002
 There is a grinding noise and a vibration coming from the bottom of the vehicle when slowing down. took to dealer and dealer will replace the differentral. please provide any further information. ts
POWER TRAIN - DRIVELINE - UNIVERSAL JOINT
05/27/200541391108/26/2004
 After having other rear-end work done earlier, we had to have them replace two u-joints. *jb
POWER TRAIN - MANUAL TRANSMISSION
09/24/2002103/19/2002
 The consumers along with three mechanics noticed something was wrong with the transmission as it shuttered when the consumer took off at the light. *scc
POWER TRAIN - TRANSFER CASE (4-WHEEL DRIVE)
10/29/20091
 2002 chevrolet suburban 2500 4wd transfer case failure *gr the consumer noticeable a considerable amount of smoke coming from behind the vehicle. he pulled over and noticed oil dripping from the transmission. the vehicle was taken to a repair shop and upon inspection it was determined the transfer case housing had a hole in it. the consumer did some research and discovered it was a well known issue with the transfer case oil pump retaining method, causing the pump to move around in the housing, eventually wearing a hole in the rear transfer case housing. *jb
04/10/200440000401/01/2002
 Noticed noise and vibration when in four wheel drive. chevy dealer inspected and determined that a plastic plug on front differential had failed and drained all of the oil from differential resulting in failure. chevy has re-designed the faulty part (obviously as a result of many failures). front differential assembly was replaced. car was repeatedly returned for service because of no 4x4 function. eventually, transfer case was removed and inspected only to discover that clutches were completely destroyed from differential failure. transfer case assembly was replaced. suburban had 40,000 miles upon initial failure (4,000 out of warranty). chevy sent owner a check for $600. reccomend that all suburban 4x4 owners immediately replace the plastic plug with new design (approx $23 part) or expect failure. chevy will not accept reponsibility. old parts are available for inspection.