Bulletins
| Bulletin | Bulletin date | Replacement Bulletin | Item no. | Summary | Added |
|---|---|---|---|---|---|
| POWER TRAIN - AUTOMATIC TRANSMISSION - CONTROL MODULE (TCM, PCM) | |||||
| PI-0448 | 04/01/2011 | 10038706 | Gm: malfunction light is on with four possible trouble codes stored. *rm | 06/27/2011 | |
| PI-0448 | 04/01/2011 | 10038706 | Ready | 06/27/2011 | |
| PI-0179 | 07/01/2010 | PI-0179A | 10036506 | Buick/cadillac/chevrolet/gmc: equipped with 6t70 or 6t75 automatic transmission (rpos mh2, mh4, mh6, my9). transmissions built 4/1/10 thru 5/8/10. a harsh shift, typically into third or fifth gear. upon investigation, technician may fin | 03/25/2011 |
| PI-0179 | 07/01/2010 | 10036506 | Buick/cadillac/chevrolet/gmc: equipped with 6t70 or 6t75 automatic transmission (rpos mh2, mh4, mh6, my9). transmissions built 4/1/10 thru 5/8/10. a harsh shift, typically into third or fifth gear. upon investigatio, technician may find | 03/25/2011 | |
| SB-09271C | 01/01/2010 | 10033029 | Pontiac/saturn/buick/gmc/chevrolet: transmission calibration update. a service procedure to reprogram the ecm and tcm on certain model vehicles. this new calibration will improve transmission shift characteristics for downshift hesitation | 06/25/2010 | |
| 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 | |
| POWER TRAIN - DRIVELINE - UNIVERSAL JOINT | |||||
| PI-0602 | 11/01/2011 | 10042291 | Buick/chevrolet/gems;saturn: on all wheel drive vehicles, there are some concerns or issues regarding incidental service for the normal propeller shaft conditions. *pe | 12/05/2011 | |
Consumer Complaints
| Fail date | miles | occurences | Purchase date |
|---|---|---|---|
| POWER TRAIN | |||
| 04/25/2011 | 20000 | ||
| While accelerating on the entrance ramp for central expressway, hwy 75, it became very sluggish, and all of a sudden had no pick up. i nearly got rear ended by a fast truck! since april of 2011 i noticed that it had no pick up. the problem seemed to go away, when i learned to not accelerate too much to enter the highway, just gradually vs in a hurry. then today, sept 2011, while driving at apprx 45 mph on a busy road, the car seemed to pull back, and the traction light comes on, and beeps at me. it was a sunny, dry day. i pull over in a parking lot, turn off the engine, to get something out of my trunk, and it would not open - and, no, the override button was not on. weird. i start the car, and the problem goes away, and i drive safely back to my destination. why does the problem always exist when i am by myself, and watch, when i take the time off to bring it to the dealership, everything will be just fine. i pray that i make it to the dealership and they diagnose some sort of defect and fix it because it still is under warranty. i cannot bear the worse case scenario of anything happen to my family. | |||
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||
| 08/01/2011 | 19000 | ||
| 2010 acadia transmission and traction control safety problems. while driving 70mph on the highway, the traction control system alarm came on in addition to a flashing stability control and abs warning lights. the rear passenger wheel locked up, the transmission downshifted into 3rd gear causing the vehicle to veer into the right lane. additionally, we have been having power steering pum problems with the vehicle which made the vehicle difficult to control in this circumstance. fortunately, there was no other vehicle in the right lane and maanged to pul the vehile off the road. i had my family in the vehile at the time which made everyone very scared for their safety. the vehicle was turned off and restarted which erased the abs and traction control warnings, but the engine check light remained on and was unable to keep the transmission in drive. the dealer replaced some ecms, but could not fix the power steering issue. three weeks later, the transimission started shifting hard and after 2 visits to the dealer is not being ivestigated for another ecm failure. the electric systems and power steering issues make this is a very unsafe vehicle. | |||
| 07/22/2010 | 10000 | ||
| Tl-the contact owns a 2010 gmc acadia. the contact stated that when in parked or just sitting in idle the vehicle would roll backwards without any warning. the vehicle was inspected by a dealer and they advised him that they altered the transmission, so it's acting according to its design. this failure has occurred on a intermittent basis for almost a year. the vehicle was not repaired. the failure mileage was approximately 10,000. tb | |||
| 11/14/2010 | |||
| My 2010 gmc acadia rolls backwards on inclines even though the transmission is in drive. i have driven automatic transmission vehicles for years and in my experience they are not supposed to roll backwards in drive. if anyone is behind the vehicle when this occurs they could very easily be crushed. the dealership acts as if this is normal behavior but it is not and they should be required to fix the problem. | |||
| 09/28/2009 | |||
| 2010 acadia front wheel drive , when in drive or in park on incline the car will roll backward or forward depending on which way the incline is. it does not hold when you move your foot from the brake to the accelorator while sitting at a traffice light or when you are parking. i have had the car bump a passenger when they walked around the front of my car to get in and i had placed the car in park and took my foot off the brake.i have owned many cars and vans and have never experienced this type of problem and it occurs often and the dealership service department is ignoring the problem. if an elderly person or child should happen to be close to the car when this happens it could cause seriou harm. | |||
| 04/08/2010 | 9400 | ||
| Tl*the contact owns a 2010 gmc acadia. while the contact driving approximately 55 mph in first gear, the transmission failed, and the rpms began to increase. the check engine warning light illuminated on the instrument panel. whenever a right turn was attempted, the vehicle stalled. the vehicle was safely driven to a location to be parked and upon restart the vehicle momentarily operated as normal until the failure recurred. the vehicle was towed to an authorized dealer where the technician stated there was a transmission failure. the failure occurred after the dealer previously replaced the transmission. the vin was not available. the failure and current mileages were 9,400. | |||