Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
POWER TRAIN - AUTOMATIC TRANSMISSION - CONTROL MODULE (TCM, PCM)
PI-044804/01/201110038706Ready06/27/2011
PI-044804/01/201110038706Gm: malfunction light is on with four possible trouble codes stored. *rm06/27/2011
PI-017907/01/201010036506Buick/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 find03/25/2011
PI-017907/01/2010PI-0179A10036506Buick/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 fin03/25/2011
SB-09271C01/01/201010033029Pontiac/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 hesitation06/25/2010
POWER TRAIN - DRIVELINE - UNIVERSAL JOINT
PI-060211/01/201110042291Buick/chevrolet/gems;saturn: on all wheel drive vehicles, there are some concerns or issues regarding incidental service for the normal propeller shaft conditions. *pe12/05/2011

Consumer Complaints


Fail datemilesoccurencesPurchase date
POWER TRAIN
09/01/2011640001
 1- we bought our used 2010 buick enclave in june 2010 with ~24000 mi. (bought from a dealer; car had been owned by a rental car place.) after only a couple months the # of times the steering tightened began to increase. it is especially difficult going into/out of parking/tight spaces. you have to use a lot of muscle to turn the car. i told the dealer about it during a routine service call, but...of course...they found nothing wrong (at the time it was infreq.) i contacted the dealer after having the car 1yr. they said there were no recalls and that i put too many miles on my car for them to hold it under warranty; i could bring it in for a $70 diagnostic fee. the $70 would not be applied to any service. i was given a guess-ti-mate of $1200-1500 if i had parts replaced...i decided to wait. the steering issue comes and goes but now happens almost every time i'm in a tight turn. i can't believe gm still has not been made to recall this issue. 2 - my car does the roll-back on all inclines too. i agree with other car owners - this should not happen in an automatic. please make gm accountable for these issues. *tr
09/01/201164000
 1- we bought our used 2010 buick enclave in june 2010 with ~24000 mi. (bought from a dealer; car had been owned by a rental car place.) after only a couple months the # of times the steering tightened began to increase. it is especially difficult going into/out of parking/tight spaces. you have to use a lot of muscle to turn the car. i told the dealer about it during a routine service call, but...of course...they found nothing wrong (at the time it was infreq.) i contacted the dealer after having the car 1yr. they said there were no recalls and that i put too many miles on my car for them to hold it under warranty; i could bring it in for a $70 diagnostic fee. the $70 would not be applied to any service. i was given a guess-ti-mate of $1200-1500 if i had parts replaced...i decided to wait. the steering issue comes and goes but now happens almost every time i'm in a tight turn. i can't believe gm still has not been made to recall this issue. 2 - my car does the roll-back on all inclines too. i agree with other car owners - this should not happen in an automatic. please make gm accountable for these issues.
07/12/2012291941
 On july 12, 2012 while entering the interstate the check engine light and traction stability service light came on. the car would not accelerate or shift, i could not increase speed to merge into highway traffic, as i tried to merge the vehicle slowly increased speed, not normally accelerating. i eventually was able to get to 55 mph. the next time i drove the car it acted fine. two days later while driving at 60 mph on the interstate without warning the check engine light, traction stability service warning light, the abs brake warning light all came on the brakes felt like mush, the car slowed in traffic, all while in the passing lane with traffic behind me. this created an extremely dangerous condition that could have easily resulted in serious injury or death. i eventually was able to move to the middle lane (3 lane roadway) and nursed the vehicle destination. when i started out again it acted fine w/check engine light and traction system warning light on then w/out warning while trying to enter the interstate again all gauges failed, ac shut off, cruise control power went off, the vehicle would not accelerate, would not shift, speed slowed from 30 to near 20, then systems started to turn back one at a time & was able to nurse the car home at 50 - 55 mph, it would not shift or accelerate correctly. took vehicle to dealer,where purchased, they had the vehicle for 2 1/2 weeks called me stated we can not get it to act up, come and pick up car not repaired. i asked about codes in computer, i have a copy of these, they stated they were history codes not hard codes. when i asked about them forcing me to drive a dangerous vehicle, could cause serious injury or death, they said if it acts up to bring it back. within 12 hrs the same events occurred as listed above. i drove it to them while all warning lights were on. they still have car it has not been repaired yet. *tr
07/12/201229194
 On july 12, 2012 while entering the interstate the check engine light and traction stability service light came on. the car would not accelerate or shift, i could not increase speed to merge into highway traffic, as i tried to merge the vehicle slowly increased speed, not normally accelerating. i eventually was able to get to 55 mph. the next time i drove the car it acted fine. two days later while driving at 60 mph on the interstate without warning the check engine light, traction stability service warning light, the abs brake warning light all came on the brakes felt like mush, the car slowed in traffic, all while in the passing lane with traffic behind me. this created an extremely dangerous condition that could have easily resulted in serious injury or death. i eventually was able to move to the middle lane (3 lane roadway) and nursed the vehicle destination. when i started out again it acted fine w/check engine light and traction system warning light on then w/out warning while trying to enter the interstate again all guages failed, ac shut off, cruise control power went off, the vehicle would not accelerate, would not shift, speed slowed from 30 to near 20, then systems started to turn back one at a time & was able to nurse the car home at 50 - 55 mph, it would not shift or accelerate correctly. took vehicle to dealer,where purchased, they had the vehicle for 2 1/2 weeks called me stated we can not get it to act up, come and pick up car not repaired. i asked about codes in computer, i have a copy of these, they stated they were history codes not hard codes. when i asked about them forcing me to drive a dangerous vehicle, could cause serious injury or death, they said if it acts up to bring it back. within 12 hrs the same events occurred as listed above. i drove it to them while all warning lights were on. they still have car it has not been repaired yet.
04/13/201239574
 Today, the enclave rolled backwards significantly while on a slight incline at freeway underpass stopped for red light. the vehicle traveled significant distance in reverse despite being in drive gear select when foot was taken off the gas to then push accelerator. took vehicle immediately to dealer and learned this is a well-known design flaw in the buick enclave, gmc acadia, chevrolet traverse. dealership said the design centered around improved mpg and trasn does not include anti-rollback feature commonly found on most auto transmissions. looking online tonight, it's evident that 2010 and 2011 (maybe others in prior years) are affected and many, many complaints have been filed formally and informally all over the internet. nhtsa, pleas hold gm accountable for this known error. they are refusing to help consumers deal with this serious safety desgin flaw. does someone have to get hurt or killed prior to forcing them to fix this? note: be advised nhtsa your complaint website dropdown meno option box for selecting the failed component is malfunctioning - displays empty box. had to type arrow down and guess mutltiple times to finally enter power train in data entry field cause you cannot see it visible online when clicking the arrow down.
03/15/20117000
 Tl-the contact owns a 2010 buick enclave. the contact stated that the vehicle began to roll backward while stopped on an incline. the failure occurred whenever the vehicle was stopped on an incline. the contact also stated that the vehicle had an automatic transmission and felt that it should not roll backward while stopped. the vehicle was taken to an authorized dealer for a diagnostic test. the technician stated that the movement was the nature of the vehicle and there were no repairs needed. the vehicle was not repaired. the approximate failure mileage was 7,000. sm.
03/15/20117000
 Tl- the contact owns a 2010 buick enclave. while stopped at an incline the vehicle suddenly began to roll backwards slightly. the failure occurs whenever the vehicle is stopped at an incline the contact stated the vehicle has an automatic transmission and feels it should not roll backwards. the vehicle was taken to the dealer for diagnostic. the technician stated the movement was the nature of the vehicle and there was no repair needed. the vehicle was not repaired. the approximate failure mileage was 7,000. ds
09/12/2011
 Tl* the contact owns a 2010 buick enclave. the contact stated that the brake booster failed and caused the brakes to seize while traveling 45 mph. the contact shifted through each gear and when the brakes were abruptly applied again, the vehicle exhibited a loud pop. the vehicle was taken to the dealer where it was confirmed that the brake booster needed to be replaced. the contact also stated that the ect switch in the transmission failed, causing the vehicle to become resistant to acceleration attempts. the vehicle was taken to the dealer and it was confirmed that the ect switch to the transmission had failed. the vin was not available. the failure mileage was unknown and the current mileage was 38,000.
09/12/2011
 Tl- the contact owns a 2010 buick enclave. the contact stated that the brake booster failed and caused the brakes to seize while traveling 45 mph. the contact shifted through each gear and when the brakes were abruptly applied again, the vehicle exhibited a loud pop. the vehicle was taken to the dealer where it was confirmed that the brake booster needed to be replaced. the contact also stated that the ect switch in the transmission failed, causing the vehicle to become resistant to acceleration attempts. the vehicle was taken to the dealer and it was confirmed that the ect switch to the transmission had failed. the vin was not available. the failure mileage was unknown and the current mileage was 38,000. kmj
09/12/2011
 Tl- the contact owns a 2010 buick enclave. the contact stated the brake booster failed and locked the brakes while the vehicle was traveling 45 mph. the contact had to shift the vehicle through all the gears and when the brake pedal was firmly pressed again, there was a loud pop and the vehicle was able to be driven. the vehicle was taken to the dealer and it was confirmed the brake booster needed to be replaced. the contact also stated the ect switch in the transmission failed. when the contact stopped at a stop light there was a pop sound from the vehicle and then the contact was unable to accelerate the vehicle properly. the contact had to turn the vehicle off and back on in order to get it run properly. the vehicle was taken to the dealer and it was confirmed the ect switch to the transmission had failed. the vin was not available.the failure mileage was unknown and the current mileage was 38,000.rl
POWER TRAIN - AUTOMATIC TRANSMISSION
01/09/20109001
 On slight incline the vehicle doesn't hold it's position unless strong pressure is placed on the brake pedal. otherwise the vehicle rolls back. nearly rolled back into vehicle behind. *tr
02/11/201068811
 I stopped on an uphill grade and the car rolled backward when i released the brake to move forward into traffic. i called the dealer and spoke with service and was informed that all 2010 buick enclaves did that. i braked the car again before i hit the car behind me. the car is now at the service department & they are checking it out. *tr
POWER TRAIN - MANUAL TRANSMISSION
10/30/2009201
 I own a 2010 bmw.the cruise cont. has been changed for 2010 & in my opinion is a safety hazard.no failures-no accidents-yet. standard feature of 2010 bmw 3, 4, 1, series & perhaps all (manual transmissions) is the cruise control does not disengage when the clutch pedal is depressed. this is a new feature for the 2010 models. it has always disengaged by pressing the clutch or brake, and obviously by manually turning off. the result is if the cruise is on, and the driver downshifts for braking, when the clutch is released, the car shoots back to the pre-set speed. thus no engine braking occurs. this is not safe. if downshifting, driver needs to either touch the brake first to disengage the cruise, or manually turn it off. not sure why this is considered an improvement by bmw; it is a safety hazard. is there anything you can do to recall these cars for re-programming of the cruise control? model year not listed. *tr