Bulletins

BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
POWER TRAIN
31053105D10017226Ping, pop, snap or click noise from the propeller shaft. *tt10/28/2005
3260100171454l80e/4l85e harsh shift or slip no tcc apply. *tt10/25/2005
335210014857Service 4wd light on with either a variety of diagnostic trouble codes or no communication with the transfer case control module. *tt05/10/2005
3276100134964l80e output carrier thrust washer changes. *tt04/20/2005
0824200408/24/200410013097Bearing growl or rattle type noise while depressing or releasing the clutch pedal. *tt04/07/2005
04073100101/01/200410011131Revised clutch pressure plate adjustment. *tt01/03/2005
04073100612/01/2004040731006A10011070Excessive shifter and/or engine vibration, bearing growl and/or rattle type noise while depressing or releasing clutch pedal. *tt12/28/2004
320510010861Allison lct1000 pump separator plate change disregard additional valve. *tt12/15/2004
315101/01/20043151A10010275Allison lct1000 transmission hard to remove from park. *tt11/09/2004
31563156A10010292261 transfer case drivelines growl 1100-1200 rpm. *tt11/09/2004
0083701/01/200400837A10010254Allison lct1000 overdrive disable lamp inoperative after installation of instrument panel (ip). *tt11/08/2004
313001/01/20043130A10010079Allison lct 1000 prndl flash and/or will not move. *tc11/04/2004
309501/01/20043095A10010217Allison lct 1000 transmission prndl inoperative and no communication with the tech 2 scan tool. *sc updated *eh11/04/2004
309201/01/200410010222Allison lct 1000 buzz noise feel on tcc apply. *sc11/04/2004
3105C3105B10009978Ping, pop, snap, or click noise from the propeller shaft. *sc11/02/2004
305401/01/200410009665Replacement flexplate may have larger bolt holes than the original flexplate. *tt10/14/2004
30833083B10009506M74 allison lct1000 pto gear applications. *tt10/04/2004
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
0206901/01/200410007766Allison lct1000 range inhibit and/or will not move. *tt07/09/2004
0197701/01/200401977A10007580Allison lct1000 prndl flash and/or will not move. *tt07/01/2004
0211301/01/200410007455Intermittent no forward or reverse with possibly either a flashing prndl display or a range shift inhibited message. *tt06/23/2004
0401903/01/2004100068114l80e / 4l85e transmission may have a condition in which the transmission overdrive gear set may fail due to inadequate lubrication as a result of a transmission casting change. customer satisfaction program bulletin. also to include 200405/14/2004
0171401/01/200410006412The 4l60e/4l65e automatic transmission may experience a leak, inoperative/slipping in 2nd, 3rd and 4th gears or no movement (no forward or reverse) due to excess fluid loss. sit bulletin 1455088. *tt05/03/2004
0171601/01/200410006248Allison lct1000 transmission prndl inoperative and no communication with the tech 2 scan tool. sit bulletin 1455451. *tt04/26/2004
03073005411/01/200310004744Transmission fluid leaks out of vent when truck is started after a cold soak. *tt01/05/2004
01129A11/18/200310004170Allison lct1000 serviceability. *tt11/20/2003
08040308/04/200310003869This vme message applies to the valve body for the allison series 1000 transmission revised for the 2004 model year to add modulated main pressure control. this revision will provide additional transmission oil cooler flow and reduce pump11/05/2003
990730022A06/01/200399073002210002886Shift stabilization and tow/haul mode feature for hydra-matic 4l60-e/4l65-e and 4l80-e/4l85-e transmissions. *tt09/30/2003
POWER TRAIN - AUTOMATIC TRANSMISSION
PIP-3366-B11/01/201110043185Cadillac/chevrolet/gmc/hummer: some suvs and trucks are exhibiting a condition where by grinding/ratcheting type noise coming from automatic transmission when shifting into park while in 4wd low (4lo) range. *pe02/29/2012
08-07-30-01504/01/200810025462Diagnostic information on mn8, mt1 ses/mil illuminated, dtc p0757, harsh shift, delayed 2-3 shift, 2-3 shift flare, no third gear, slips in third gear or reverse. *pe08/12/2008
392709/27/200610020489Engine with a repeat cracked flywheel. *kb10/27/2006
05073001702/01/2006050730017B100174624l60-e/4l65-e automatic transmission/torque converter clutch (tcc) shudder, water in transmission. *tt11/08/2005
05073001305/01/2005100173544l60-e/4l65-e automatic transmission second gear start, lack/loss of power when accelerating from a stop. *tt11/03/2005
3438A10017100Tcc surge and/or fluid contamination. *tt10/24/2005
349710016523Range inhibit and/or will not move. *tt09/20/2005
05073000201/01/200510013480New essential tool j 45096 23 automatic transmission oil cooler line adapter for allison transmission. *eh04/19/2005
02073001106/01/200410012151Slow or no engagement of automatic transmission no start blank prndl display flashing prndl diagnostic trouble code p0708 p0872 p0847 p0875 p1711 p1713 or u1000 set. this service bulletin replaces 020730011. *eh02/15/2005
324310011753Leak from the vent 4l80e/4l85e transmission. *eh01/31/2005
316110010546Allison lct1000 clunk noise on start in park. *eh12/01/2004
31703170C10010577Harsh 1-2 shift. *eh12/01/2004
3055901/01/200410009674Allison lct1000 diagnostic trouble code p1711, p0872 after completing repairs. *tt10/14/2004
0422200404/22/200410009235Rattle type noise due to a cracked flex plate. gm voicemail express. *tt09/20/2004
0085601/01/200400856A10007815Allison lct1000 oil pump whine, buzz on cold start. *tt07/12/2004
0133001/01/200401330A10007606Allison lct1000 buzz, moan noise at 1400 rpm with the 8.1 l18 gas engine. *tt07/02/2004
0165401/01/200401654A10007233Squawk or grunt noise that occurs on the 2-3 upshift on vehicles with 4l60e - m30, 4l60e m32 transmission. *tt06/04/2004
01932325410006495Allison lct1000 dark or discolored transmission fluid with no loss of performance. *mr05/04/2004
03073005711/01/200310005581Transmission fluid leak from front of transmission - torque converter housing/pump area. 2500/3500 series models. *tt03/04/2004
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
0149301/01/200410005508Allison lct1000 prndl flash and/or will not move with p0721, p0731, p0732, p0733, p0734, p0743, p0746, p0747, p0776, p0777, p1720, p1721, p1723 and p1724. *tt03/01/2004
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
03073005310/01/200310004747Allison automatic transmission valve body hardware changes. *tt01/05/2004
030730031D02/01/2006030730031E10004379Transmission leaks, slips, vehicle will not move. *tt12/04/2003
03073004408/01/2004030730044A10004326Information on allison transmission service repairs - full service of internal components. *tt12/02/2003
00557B11/18/200310004190The allison lct1000 transmissions may experience a leak from oil pump area. *tt11/21/2003
0134311/18/200310004122Allison lct1000 diagnostic trouble code (dtc) p0700 and no communication with the tech 2. *tt11/19/2003
02073000409/01/2006020730004C631800New product information, grade brake feature of allison 1000 series transmission. *slc this bulletin replaces 02-07-30-004. *tt06/20/2002
POWER TRAIN - AUTOMATIC TRANSMISSION - CONTROL MODULE (TCM, PCM)
PIP339402/01/2008PIP3394E10024283Duramax diesel injector driver codes with 6.6 engine (vin 2 - rpo lly). *nj04/01/2008
306112/01/20073061F10023773Dtc c0327 with or without additional dtc's setting. with four wheel drive (4wd) only. *nj01/31/2008
429012/01/200710023751Engine surge or stall at stop and/or dtc p0742 possible tcc applied. equipped with allison lct1000 transmission rpo m74 or mw7. *nj01/30/2008
0148301/01/200410005496Vehicle has no pcm (power train control module) communication with tech 2. sit bulletin 1400427. *tt03/01/2004
0147311/18/200310004274Allison lct1000 diagnostic trouble code (dtc) p0700 unable to communicate with the transmission control module (tcm) using the tech 2. *tt11/24/2003
00938B11/18/200310004179Allison lct1000 repeat transmission control module (tcm) failures with possible multiple diagnostic trouble codes (dtcs). *tt11/20/2003
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
POWER TRAIN - AUTOMATIC TRANSMISSION - LEVER AND LINKAGE - COLUMN SHIFT
0185601/01/200410006712Allison lct1000 will not shift from park due to ice, snow or mud build-up on shift linkage. *mr05/11/2004
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
336410014953Rear axle retainer button breakage. *eh05/12/2005
329410013541Highway speed vibration on smooth surface. *eh04/21/2005
313710010612Service 4wd light on and no communication with transfer case control module. *eh12/02/2004
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
POWER TRAIN - AXLE HUBS
01222A01/01/200401222B10007278Repeat rear axle hub seal leak. *tt06/09/2004
POWER TRAIN - CLUTCH ASSEMBLY
387010020238Clutch pedal fade or clutch will not disengage typically when towing. *tt08/21/2006
POWER TRAIN - DRIVELINE
33003300A100135724wd models with noise, vibration on dry pavement. *eh04/21/2005
0211601/01/200410007447Highway speed vibration on k2500hd 4wd vehicles equipped with a 4l80e automatic transmission. *tt06/23/2004
POWER TRAIN - DRIVELINE - DRIVESHAFT
04049500103/01/200410008653Revised wheel drive shaft nut torque specification. *tt08/12/2004
POWER TRAIN - MANUAL TRANSMISSION
414410022360Allison lct1000 harsh 3-2, 2-1 downshift, and abs may activate. *kb08/03/2007
31363136K10021019Slip condition in 2nd, 3rd, or 4th. damaged 2-4 or 3-4 clutch. *kb updated 10/31/07. *nj02/22/2007
00908D01/01/200400908E100054416.6l and manual transmission growl noise while engaging or disengaging clutch. *tt *mj02/27/2004
00908C01/01/2003100044096.6l and manual transmission growl noise while engaging or disengaging clutch. these are c/k models. *tt12/05/2003
POWER TRAIN - TRANSFER CASE (4-WHEEL DRIVE)
3665100189264wd inoperative and possible dtc c0327 stored in the transfer case control module. *tt01/24/2006
05-04-21-00301/01/2008050421003C10017464Service 4wd light illuminated, diagnostic trouble code (dtc) c0374 set. *tt updated 10/05/07. *nj inspect wiring harness to transfer case speed sensors, replace wiring harness. updated 7/18/08 *pe11/08/2005
34243424A10017299Electronic transfer case unable to complete shift. *tt11/02/2005
352610016558Intermittent service 4wd light comes on with diagnostic trouble code (dtc) c0306 or c0308 stored in tccm. *tt09/22/2005
335110014853Intermittent malfunction indicator lamp (mil) with diagnostic trouble code (dtc) c0374 or erratic 4wd/awd operation. *tt05/10/2005
3134B3134C10010044Service 4wd indicator illuminated. *tc with diagnostic trouble code co327. *tt11/03/2004
020421006C03/01/2004020421006D10004357Inoperative 4wd/awd lamps, inoperative 4wd/awd system. *tt12/04/2003
01267B11/18/200310004200Service 4wd light on no codes besides u1000 codes. service vme. *tt11/21/2003
01267A11/18/200310004104Service 4wd light on, the 4wd is inoperative and no codes besides u1000 codes. service vme. *tt11/18/2003

Consumer Complaints

Fail datemilesoccurencesPurchase date
POWER TRAIN
09/22/200990000
 Tl* the contact owns a 2004 gmc sierra. the contact stated that the vehicle jerked violently. the vehicle was taken to the dealer for inspection where they stated that there was nothing wrong with the vehicle. the vehicle was not repaired. the manufacturer was notified and provided no assistance. the failure mileage was 90,000.
09/22/200990000
 Tl- the contact owns a 2004 gmc sierra. the contact stated that the vehicle jerked violently. the vehicle was taken to the dealer for inspection where they stated that there was nothing wrong with the vehicle. the vehicle was not repaired. the manufacturer was notified and provided no assistance. the failure mileage was 90,000. kmj
09/22/200990000
 Tl- the contact owns a 2004 gmc sierra. the contact stated that while driving the vehicle, it jerked violently. the vehicle was taken to the dealer for inspection and they stated that there was nothing wrong with the vehicle. the vehicle was not repaired. the manufacturer was notified and they stated that there was nothing that could be done. the failure mileage was 90,000. ap
03/01/201245000
 The manual shift on the fly system (msof) with new venture gears automatic transfer case is defectively designed. a metal anti-rattle clip works it way through the case housing, causing all fluid to leak out out of the transfer case. the clutches then burn out rendering the transfer case useless. the result is no 4 wheel drive (no power to front wheels) when shift on the fly is pressed, leaving driver sliding on snow or ice--which happened to me in a near wreck. i recovered from the slide and got the vehicle home and then to a repair shop (once the snow melted) for a new transfer case (repair ongoing). drivers may rely on the 4wd in inclement weather to certain conditions and be injured when the 4wd does not engage due to the defective transfer case. this condition is so common in the gmc sierra/chevy silverado that there are now parts to prevent the clip from eating through the housing: the merchant automotive upgrade provides the solution that should be done to all 4wd models with the defective transfer cases: http://www.youtube.com/watch?v=nj5zs8womnk&feature=related the condition would not impact 2wd models, however. it should be remedied by general motors.
06/30/200416782011/26/2003
 1st broken flywheel replaced; now 05/31/05 back in for 2nd fly wheel replacement.
08/01/2004104/16/2004
 Problems with shifting on 2004 gmc sierra. *mr the consumer noticed some shifting problems and noises. the consumer was advised that the transmission must be taken out. the consumer found that the vehicle should have been not sold until repaired. recall# 04019. *sc *jb
POWER TRAIN - AUTOMATIC TRANSMISSION
04/04/2006100001
 Dt*: the contact stated while driving in normal conditions, the transmission locked up. the vehicle was taken to the dealer several times for inspection. the dealer replaced the transmission; however, the new transmission has the same problem.
12/10/20035000100011/23/2003
 Transmission makes a clunking sound when shifting from 2nd to 3rd gear. also, intermittnet slipping of transmission when starting to move from a full stop. vehicle hesitates before it begins to move. this occured within the 1st 500 miles and contines to occur today.
01/01/200512000306/15/2004
 Automatic transmission would intermittently hesitate before catching in gear while driving. vehicle has been to the dealer on two separated occasions and they were unable to duplicate the problem. consumer was concerned that this vehicle maybe rear ended. *ak the truck was on an incline in overdrive with my foot on the brake, let off the brake and gave it gas to merge into traffics and the truck wouldn't accelerate. it hesitated until felt like a gear caught and then into traffic instead of going when it needed to go. the second time was almost the same way. *bf
10/04/2004500602/22/2004
 I purchased my 2004 gmc sierra 1500 4x4. i put it in 4 wheel drive to go through some ice and it made a very loud clank. not long after that when i put it in reverse or drive it also made the same loud clank. it did not sound like that when i first bought the truck. now the truck has trouble going into 4 wheel drive and also gets hung in reverse. it has almost caused me to get in a bad accident. my cruise control also has have 6 malfunctions. i had the dealer fix it initially. i have fixed it subsequently due to the fact they said it was a blown fuse. the 4 wheel drive and transmission problems were addressed 3 times and all the dealers said nothing was wrong. an independent mechanic said there is a defect with my transmission and transfer case. that is it with the truck. now just last thursday feb 3, my bridgestone tire separated. my tire dealer said the tire was defective. there was no evidence what so ever that there was any damage to the tire to cause the blowout. it should not have separated. it caused a fire. it was quickly put out. *jb
04/25/20044
 The windshield is leaking water down into the electrical system. the wiring is shorting out. also, the linkage has fallen out. you can smell burnt wiring and smoke. the consumer has contacted the dealer several times. the dealer continuously told the consumer that the gentleman was not there that she needed to see. consumer had someone else look at the vehicle. and was told the vibration from driving had jarred the the pin loose. the blower, heat, and the transmission failed. *ak
11/23/20043200109/25/2004
 Consumer and his wife were cleaning the vehicle. husband was outside washing the vehicle, while the wife was inside the vehicle, cleaning. the wife had the key in the ignition, turned to accessories while listening to the radio, and accidentally pushing the shifter down with car being off and vehicle moved backward, hitting the husband and injuring his knees.*ak the consumer entered a file # of 1-281746845. *tc
10/10/200451002005/07/2004
 Truck vibrates and makes noise between 40 and 50. sounds like binding. happens as truck is shifting in and out of overdrive. dealer has tried but cannot duplicate condition.*ak
10/07/200410010009/15/2000
 The transmission has intermittent shifting problems, it hesitates and big noise happens. dealer hasn't found anything. also truck vibrates at 40-50 miles an hr. very annoying. the dealer says on going problem with no solution. thinking of buying a ford moving ahead. *nm
04/12/20041000702/13/2004
 The center hub of the wheels constantly falls off. the plastic screws that hold the hub on the wheel are not securing the hub properly. the consumer has lost six of these hubs since owning the vehicle. *jb the vehicle would buck when put into 4low and shifting into park or neutral from reverse or drive. the vehicle made a thumping noise when making left turns and the consumer could feel it in the steering wheel. *nm
06/18/200430000109/01/2003
 Our son-in-law owns a 2004 gmc 4-door pickup. it has automatic transmission. our two-year old grandson was in the truck while his father was cleaning it. the key was in the accessory position so they could listen to the radio. the child pulled the shift lever out of park and the truck ran away down an incline. both driver's side doors were separated from the vehicle by a tree and the truck continued until rear-ending another tree. the child stayed in the vehicle and was unhurt.*ak in checking this truck, our 2003 tahoe, and our 2003 chevrolet pickup we find that all of them: 1. the shift lever is locked when the key is in the locked position 2. the shift lever is locked when in the run or ignition position and requires the brake to be depressed prior to shifting. 3. but in the accessory position the shift is completely unlocked and requires only a very slight pressure to move it out of park and result in a runaway. i feel there is no reason for the shift lever not to be locked in all positions and, in fact, the fact it is locked in two positions but not the accessory position results in confusion and a false sense of security. this was not a component failure, but is a design failure that apparently involves all gm trucks and suvs of this model.
01/19/20048000111/04/2003
 Transmission will slip every so often, also it will make a loud noise when shifting from 2nd to 3rd. this happens alot but not every time. the four wheel drive makes a grinding noise as you start moving and continues for a good distance (4 high)*ak
POWER TRAIN - AUTOMATIC TRANSMISSION - LEVER AND LINKAGE - COLUMN SHIFT
10/19/2009114743
 Tl* the contact owns a 2004 gmc sierra . the column shifter could change gears without brake application. the vehicle has not been diagnosed by the dealership. the current and failure mileages were 114743.
POWER TRAIN - CLUTCH ASSEMBLY
06/18/20041534406/07/2004
 #1 04 sierra 4x4 returned to dealer after 2 weeks (9/18/04) with 1523 miles for hard shifting. clutch was not installed correctly from factory. engage and disengage point in clutch pedal travel is at full depression into the firewall. #2 passenger door hard to close fully. driver side door closes as expected with little effort. passenger door will not close completely without undue force being applied or a window cracked. #3 returned truck to a different dealership on 9/15/05 with 8,190 and again 12/15/05 with 10,282 miles. for a knocking noise during turning, clutch not engaging and disengaging correctly, passenger door not closing completely, and a new rattling noise from the transmission along with a whine noise from the gears. the dealership fixed the knocking noise from a service bulletin concerning a steering bushing. this dealership also stated they found nothing wrong with the clutch or the transmission or the passenger door. none of the problems were fixed #5 i immediately took the truck to an independent transmission specialist after picking it up from the dealership for a 3rd opinion on 12/20/05 with 10,284 miles. his opinion was flatly stated that the truck has major problems with the clutch and the transmission. his evaluation was the clutch was not installed correctly from the factory and depression into the firewall was not correct. the transmission has synchronizer and possible bushings and bearings that were failing. he stated the noises alone were definite indicators that the transmission has problems and that anyone would know that a clutch is not required to be depressed into the firewall for proper operation which in time will lead to premature clutch failure. this evaluation cost me $30 and 3 hour lost from work. *jb
POWER TRAIN - TRANSFER CASE (4-WHEEL DRIVE)
01/19/20048000111/04/2003
 Transmission will slip every so often, also it will make a loud noise when shifting from 2nd to 3rd. this happens alot but not every time. the four wheel drive makes a grinding noise as you start moving and continues for a good distance (4 high)*ak

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