Bulletins
| Bulletin | Bulletin date | Replacement Bulletin | Item no. | Summary | Added |
|---|---|---|---|---|---|
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||||
| 08-07-30-001 | 01/01/2008 | 10025667 | 4l80e, mt1 and 4l85e, mn8 simplified valve body reconditioning instructions, dtc p0741, p0742, p0752, p0752, p0756, p0757, p0894, harsh or delayed shifts, slips, no drive, no reverse. *pe updated 6/11/10. *pe | 08/28/2008 | |
Consumer Complaints
| Fail date | miles | occurences | Purchase date |
|---|---|---|---|
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||
| 10/30/2008 | 112000 | 1 | |
| Allison transmission housing failed at 54,000 miles. gm paid parts, i paid 1,200.00 labor , was told that there was 2 bulletins out on defective housing and when they finished repair they said they installed updated housing so i would not have problem again. don't think i should have paid anything to have it repaired! at 105,000 miles transfer case failed , cost 1,150.00 to repair, have had to take back 2 more times as repair was not done right. at 112.000 miles speedometer became erratic was told it was a common problem ,and see on complaint search it is , consider this a great safety danger as i do not know what speed i'm going can only guess not fixed yet found some who sells rebuilt ones foe 150.00 ,said their rebuilding them due the large number that are failing. also at 112,000 miles park neutral switch started acting up ,check engine light on ,shift bar light goes away, truck won't shift properly and stay in certain gears without shifting up ,effects door locks. looked up park neutral shift as part and came across bulletins stating that during left hand turn front tire sprays water onto park neutral ,switch causing problem ,needs front & rear shield installed to solve problem. have taken truck back in waiting for information. also around 90,000 miles had very hard time starting truck and truck ran poorly,problem became worse took in, fuel injectors were bad and were replaced under warranty at 112,000 miles no need to say i'm not a gmc fan anymore , even though i live in lansing mi ( a gm town)and have lots of friends and family employed there. good by gmc! never again. *tr | |||
| 09/17/2007 | 73000 | 2 | |
| Fly wheel and speedometer. *tr | |||
| 08/22/2006 | 53000 | 3 | 02/12/2006 |
| Flywheel on four locally owned gm trucks were reported being cracked or broken. old parts are avail. since then speedometer doesn't work properly and i am told there's no problem. *jb | |||
| POWER TRAIN - AXLE ASSEMBLY - AXLE SHAFT - SEAL | |||
| 09/13/2007 | 1 | 11/20/2003 | |
| 2004 gmc 2500 hd. purchased my truck in fall of 2003. my speedometer stopped working properly. truck only has 45k miles. dealership advised the instrument cluster panel was bad needed to be replaced. new part is @ $210.00 plus labor. the seal on my right front axle is also starting to leak. *tr | |||
| 12/05/2006 | 49700 | 3 | 09/09/2003 |
| Dt*: the contact stated while the vehicle was parked on a hill with the parking brake engaged, the vehicle rolled backwards without warning. the contact was inside the vehicle, and managed to avoid a crash by applying brake pressure. the vehicle was inspected by a dealer, who determined a large amount of grease was present on the parking brake shoe from a leaking right rear axle seal. the right rear axle seal was replaced, but afterwards the problem persisted. the contact inspected the vehicle, and determined the left rear axle seal was leaking and needed to be replaced. the manufacturer was alerted. *ak | |||
| POWER TRAIN - DRIVELINE | |||
| 10/30/2008 | 112000 | 1 | |
| Allison transmission housing failed at 54,000 miles. gm paid parts, i paid 1,200.00 labor , was told that there was 2 bulletins out on defective housing and when they finished repair they said they installed updated housing so i would not have problem again. don't think i should have paid anything to have it repaired! at 105,000 miles transfer case failed , cost 1,150.00 to repair, have had to take back 2 more times as repair was not done right. at 112.000 miles speedometer became erratic was told it was a common problem ,and see on complaint search it is , consider this a great safety danger as i do not know what speed i'm going can only guess not fixed yet found some who sells rebuilt ones foe 150.00 ,said their rebuilding them due the large number that are failing. also at 112,000 miles park neutral switch started acting up ,check engine light on ,shift bar light goes away, truck won't shift properly and stay in certain gears without shifting up ,effects door locks. looked up park neutral shift as part and came across bulletins stating that during left hand turn front tire sprays water onto park neutral ,switch causing problem ,needs front & rear shield installed to solve problem. have taken truck back in waiting for information. also around 90,000 miles had very hard time starting truck and truck ran poorly,problem became worse took in, fuel injectors were bad and were replaced under warranty at 112,000 miles no need to say i'm not a gmc fan anymore , even though i live in lansing mi ( a gm town)and have lots of friends and family employed there. good by gmc! never again. *tr | |||
| POWER TRAIN - TRANSFER CASE (4-WHEEL DRIVE) | |||
| 04/08/2009 | 120000 | ||
| Tl*the contact owns a 2004 gmc sierra 2500 hd. the contact performed routine maintenance on the vehicle and observed that the transfer case (4 -wheel drive) contained pinholes, which led to an internal fluid leak. the transfer case fluid level was completely empty. the locking clip failed, which contributed to the failure. the vehicle was taken to an independent transmission shop and the technician replaced the locking clip. the failure mileage was 120,000 and current mileage was 126,000. | |||