Bulletins
| Bulletin | Bulletin date | Replacement Bulletin | Item no. | Summary | Added |
|---|---|---|---|---|---|
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||||
| PI0522B | 04/01/2012 | 10044233 | Gm: tick or rattle noise from front of dash, transmission filler tube cracked or broken (inspect filler tube, replace tube as necessary). *js | 05/23/2012 | |
| 09-07-30-004F | 03/01/2012 | SB-0907-30-004-G | 10043845 | Gm: slips in reverse or third, delayed reverse or drive engagement, dtc p0776, p2715, p2723, harsh 2-3 shifts (inspect 1-2-3-/ 3-5-r housing and pump seal rings). this condition may be caused by a cracked 1-2-3-4/ 3-5-r clutch housing. *j | 04/30/2012 |
| 09-07-30-004F | 02/01/2012 | 10043845 | Gm: slips in reverse or third, delayed reverse or drive engagement, dtc p0776, p2715, p2723, harsh 2-3 shifts (inspect 1-2-3-/ 3-5-r housing and pump seal rings). this condition may be caused by a cracked 1-2-3-4/ 3-5-r clutch housing. *j | 04/30/2012 | |
| PIP-3366-B | 11/01/2011 | 10043185 | Cadillac/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. *pe | 02/29/2012 | |
| PIP-4379D | 09/01/2010 | 10036204 | Chevrolet/gmc: delayed or no drive and or delayed or no reverse with dtc's, range inhibit. model years 2001-2011. *pe | 03/11/2011 | |
| SB-09038 | 09/01/2009 | 10031424 | Chevrolet/gmc: enhanced calibration for transmission overheat in extreme cold air temperatures. located in certain us cold weather states; alberta, british columbia, manitoba, newfoundland, northwest territories, ontario, quebec, saskatch | 01/05/2010 | |
| PIT-4846A | 05/06/2009 | 10030244 | Cadillac/chevrolet/gmc: locations of high speed gmlan wiring concerns. gauges inoperative, no crank, harsh transmission shifting, no transmission shifting, door locks cycling and indicators on. *pe | 09/02/2009 | |
| 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 | |
| 08-07-30-021 | 05/01/2008 | 10025668 | Loss of high speed gmlan communications, intermittent no crank, ipc gauge fluctuation, intermittent door lock cycling, transmission may not shift, dtcs u0073, u0100, u0101, u0102, u0121, u0140 set (repair backed out terminal in transmission | 08/28/2008 | |
| 08-07-30-023 | 05/01/2008 | 10025670 | 4l60-e/4l65-e/4l70-e automatic transmission fluid leak from oil pump or bell housing area (replace torque converter hub-to-oil pump seal assembly). attn: this bulletin applies to vehicles built prior to december 2007. *pe | 08/28/2008 | |
| POWER TRAIN - AUTOMATIC TRANSMISSION - CONTROL MODULE (TCM, PCM) | |||||
| 08-07-30-021G | 03/01/2012 | 10043829 | Gm: loss of high speed gmlan communications, intermittent no crank, ip gage fluctuation, intermittent door look cycling, intermittent chime operation, various ip warning lamps illuminated, transmission may not shift, communication dtcs u007 | 04/27/2012 | |
| PIP-4653B | 09/01/2009 | 10032434 | Buick/chevrolet/hummer/gmc/pontiac/cadillac/saturn: technicians may find dtcs p0601, p0603, p0604, p062f or p1621 stored in the tcm as an active or a history code. some of these dtcs can also be set in the ecm or fpcm. make sure that you | 03/24/2010 | |
| SB-09038 | 09/01/2009 | 10031424 | Chevrolet/gmc: enhanced calibration for transmission overheat in extreme cold air temperatures. located in certain us cold weather states; alberta, british columbia, manitoba, newfoundland, northwest territories, ontario, quebec, saskatch | 01/05/2010 | |
| 08-07-30-021 | 05/01/2008 | 10025668 | Loss of high speed gmlan communications, intermittent no crank, ipc gauge fluctuation, intermittent door lock cycling, transmission may not shift, dtcs u0073, u0100, u0101, u0102, u0121, u0140 set (repair backed out terminal in transmission | 08/28/2008 | |
| 08-07-30-021 | 04/01/2008 | 10025402 | Loss of high speed gmlan communications, intermittent no crank, ipc gauge fluctuation, intermittent door lock cycling, transmission may not shift, dtcs u0073, u0100, u0101, u0102, 70140 (repair backed out terminal in transmission harness co | 08/06/2008 | |
| 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 |
| POWER TRAIN - AUTOMATIC TRANSMISSION - COOLING UNIT AND LINES | |||||
| PIP-4424 | 06/01/2008 | 10026664 | Gmc: leak from transmission oil cooler line fitting on vehicles built in april or may, 2008. *pe | 11/25/2008 | |
| POWER TRAIN - AXLE ASSEMBLY | |||||
| 09-04-17-002E | 01/01/2011 | 10037552 | Gm: there may be a bump noise or clunk feel when stopping or launching. this may be caused by a slip in the transmission. *rm | 05/25/2011 | |
| 09-04-17-002E | 01/01/2011 | 10037552 | Ready | 05/25/2011 | |
Consumer Complaints
| Fail date | miles | occurences | Purchase date |
|---|---|---|---|
| POWER TRAIN | |||
| 02/02/2012 | 32120 | ||
| Both (upper and lower) transmission cooler lines leaking. dealer advised both lines needed replacement at cost of $988.88, and not covered by the power train warranty. appears to be leaking from crimp area on both lines. independent transmission shop advised stock (gm) cooler lines cannot handle the pressure of the allison transmission. recommended replacement with aftermarket braided lines. | |||
| 02/15/2010 | 44 | 1 | |
| 2008 silverado ltz-44.000 mi. upon stopping veh. engine wouldn't stop when i applied the brakes, placing engine in neutral rpm,s went to 3x100, place back in drive it drop into normal zone. i nearly collided with a veh. in front of me also ran a red light at another time as engine got a life of its own. chevy dlr inspd same said a pip had been issued for faulty throttle carbon build up. repair same to no avail. this happens not all the time. so far chevy is unresponsive. this is a dangerous situation. *tr | |||
| 11/24/2008 | 15731 | 1 | |
| I have a 2008 chevrolet silverado crew cab that makes clanking sound when the transmission shifts into third gear. i went to the local dealership and was told that this is normal for this truck. the truck has less than 16,000 miles on it. the mechanic told me that he was surprised that it had not started making this noise sooner. it has become progressively louder and can be heard with the windows down. coincidentally, this is the same sound the truck started making a few months ago when i would take off at a stoplight/stop sign. i could feel a pause and then it would clank and start to move. again this can be heard with the windows down. i went to the dealership at that time and was told this is normal operation. now the truck clanks when taking off from a stop and when it shifts into third gear. *tr | |||
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||
| 12/27/2009 | 20000 | ||
| Tl* the contact owns a 2008 chevrolet silverado. while idling at a stop sign he heard a thumping sound from under the vehicle. simultaneously the vehicle began to jerk forward. the vehicle was taken to the dealership and he was informed that the transmission needed to be lubricated. the current and failure mileages were 20000. | |||