Bulletins
| Bulletin | Bulletin date | Replacement Bulletin | Item no. | Summary | Added |
|---|---|---|---|---|---|
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||||
| SB-080730049B | 04/01/2011 | 10038984 | Gm: some vehicles may have transmission fluid leaking from the coolant lines in cold temperatures. *rm | 06/30/2011 | |
| SB-080730049B | 04/01/2011 | 10038984 | Gm: | 06/30/2011 | |
| PIP-4395 | 08/01/2008 | 10026149 | Gmc: flare and or harsh 2-3 shifts. this condition may be caused by leaking 1-2-3-4 and 3-5-r clutch fluid seal rings (230). models cadillacs, chevrolets, gmc, hummers, pontiacs. equipped with 6l80 (rpo myc) or 6l90 (rpo myd) automati | 10/02/2008 | |
| 4292 | 12/01/2007 | 10023772 | Dtc p0756, p0796, p2714, p2723, tcc shudder or harsh engagement, harsh shifts, water in transmission - keywords code converter fluid torque. equipped with 6l50, 6l80 or 6l90 (rpo's myb, myc, myd) automatic transmission. *nj | 01/31/2008 | |
| 4052 | 4052A | 10022794 | 2-3 upshift slip or flare. *kb | 09/27/2007 | |
| 3136 | 3136K | 10021019 | Slip condition in 2nd, 3rd, or 4th. damaged 2-4 or 3-4 clutch. *kb updated 10/31/07. *nj | 02/22/2007 | |
| POWER TRAIN - AUTOMATIC TRANSMISSION - CONTROL MODULE (TCM, PCM) | |||||
| SB-08-06-03-006A | 02/01/2009 | 10028753 | General motors: engine running with key off, continuous run; sensing diagnostic module (sdm), no communication, service air bag light illuminated (install diode to solenoid/relay). *pe | 05/22/2009 | |
| PIP3605 | 03/01/2008 | PIP3605A | 10024601 | Dtc u0101, no engine crank and no tech ii communication with tcm. equipped with allison lct1000 (rpo-mw7) automatic transmission. *nj | 04/28/2008 |
| 4143 | 12/01/2007 | 4143A | 10023760 | U0106 loss of communication with glow plug control module. equipped with the 6.6l duramax diesel engine rpo code lmm. *nj | 01/30/2008 |
| 4290 | 12/01/2007 | 10023751 | Engine surge or stall at stop and/or dtc p0742 possible tcc applied. equipped with allison lct1000 transmission rpo m74 or mw7. *nj | 01/30/2008 | |
| 07293 | 02/01/2009 | 07293C | 10023656 | Transmission overheat in extreme cold ambient temperatures - reprogram tcm. located in alaska and minnesota; canadian yukon and northwest territories only. *nj csc was received. updated 3/13/08. *nj updated 4/24/08. *n | 01/22/2008 |
| 4112 | 04/01/2009 | PIP-4112H | 10023432 | Sag or hesitation on acceleration (normal operating characteristics). equipped w/ gasoline engine and automatic transmission. *nj updated 1/30/08. *nj updated 10/01/08. *pe updated 8/12/09. *pe | 12/11/2007 |
| PIP4219 | 02/01/2008 | PIP4219B | 10022916 | Diagnosis for service fast learn adapts fails, no forward or no reverse. *nj updated 4/1/08. *nj | 10/04/2007 |
| POWER TRAIN - AXLE ASSEMBLY | |||||
| 080420001A | 04/01/2008 | 10025285 | Ei08084 - rear axle gear whine noise from heavy duty pickup trucks equipped with 11.50 ring gear and mw7 automatic transmission (diagnose ring and pinion). built from october 12, 2007 thru october 17, 2007. *pe | 07/25/2008 | |
| 07320 | 03/01/2008 | 07320A | 10023654 | Front axle vent tube kinked - fluid leak. *nj csc was received. updated 4/24/08. *nj | 01/22/2008 |
| POWER TRAIN - MANUAL TRANSMISSION | |||||
| PIP4304 | 02/01/2008 | PIP4304A | 10024346 | Dtc p0878, p2714, p2723, transmission slips in 1st, 2nd, 3rd, or 4th gears and/or long garage shifts to drive, equipped with a 6l50 (myb), 6l80 (myc), or 6l90 (myd) transmission. *nj | 04/07/2008 |
| POWER TRAIN - TRANSFER CASE (4-WHEEL DRIVE) | |||||
| PIP4365 | 09/01/2009 | PIP-4365B | 10024522 | Transfer case will not shift possible dtc's c0387 and/or c0569. on vehicles equipped with a magna transfer case rpo nqf. *nj updated 3/15/10. *pe | 04/22/2008 |
| 4303 | 12/01/2007 | 4303A | 10023744 | 4 wheel drive inoperative front axle will not engage - keywords clunk grind growl k2 k3 equipped with a 9.25 front differential. *nj updated 2/27/08. *nj | 01/29/2008 |
Consumer Complaints
| Fail date | miles | occurences | Purchase date |
|---|---|---|---|
| POWER TRAIN | |||
| 02/05/2013 | 28537 | 1 | |
| Transmission fluid leaking from crimps where metal ends are attached to rubber hoses. *tr | |||
| 02/05/2013 | 28537 | ||
| Transmission fluid leaking from crimps where metal ends are attached to rubber hoses. | |||
| 10/01/2011 | 38000 | ||
| Tl* the contact owns a 2008 chevrolet silverado 2500. the contact stated that the transmission was leaking fluid and the vehicle would stall without warning. the dealer and the manufacturer were contacted, but denied any assistance with repairs to the vehicle. the vehicle was not repaired. the failure mileage was 38,000 and the current mileage was 41,000. | |||
| 10/01/2011 | 38000 | ||
| Tl- the contact owns a 2008 chevrolet silverado 2500. the contact stated that the transmission was leaking fluid and the vehicle would stall without warning. the dealer and the manufacturer were contacted, but denied any assistance with repairs to the vehicle. the vehicle was not repaired. the failure mileage was 38,000 and the current mileage was 41,000. kmj | |||
| 10/01/2011 | 38000 | ||
| Tl- the contact owns a 2008 chevrolet silverado 2500. the contact stated that the transmission was leaking fluid and would stall on the highway. the dealer and manufacturer were contacted, but denied any assistance with repair to the defect. the vehicle was not repaired. the failure mileage was 38,000 and the current mileage was 41,000. nw | |||
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||
| 05/28/2009 | 500 | ||
| 2008 chevy silverado 2500, gas engine, 34,600 miles. transmission is having issues that dealer cannot seem to fix. new pump put into trannie, still having problems. usually happens in tow haul mode, hauling approx 5,000 lbs. transmission will not shift up, holds and revs to 3500 or 4000 rmp | |||
| 11/15/2009 | 53700 | 1 | |
| Automatic transmission lines 2008 chevy silverado with allison transmission. factory transmission lines leak and must be replaced. when the weather turns cold, the lines/crimps holding the rubber hose to the pipes fail and automatic transmission fluid is lost, sometimes in catastrophic manner, causing the vehicle to loose propulsion. reports of failure are extremely common, and it is not unusual, that the lines may have been replaced 3 times within the 1st 50,000 miles. gm has issued 'new, updated' parts, but they are no better than the original parts. the new part numbers are 20759971, 20759972, 20759973. wile repair is covered on the 36k bumper to bumper warranty, there is no coverage on the 100k warranty. gm should replace the lines free of charge for the 1st 100k miles with a hose that will not fail. consumers can take the original gm line to a hydraulic shop, have the rubber portion of the lines replaced with standard hydraulic hose suitable for atf fluid and there are no further failures. if consumers can fix the lines, perhaps gm can find a solution. *tr | |||