Bulletins
| Bulletin | Bulletin date | Replacement Bulletin | Item no. | Summary | Added |
|---|---|---|---|---|---|
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||||
| 08-07-30-002 | 01/01/2008 | 10025561 | Information on 4t65-e mn7, m15 and m76 front wheel drive automatic transmission valve body reconditioning, dtcs p0741, p0742, p0757, p842, harsh shifts or slips. *pe update 6/11/10. *pe | 08/21/2008 | |
| 08-07-30-016 | 04/01/2008 | 080730016A | 10025421 | Diagnostic information on mh1, mn8, mt1, m15 transmission slips, will not shift or may overheat, ses/mil may be illuminated, dtcs p0218, p0894 set. *pe updated 8/12/08. *pe | 08/07/2008 |
| 080730002 | 03/01/2008 | 080730002A | 10025065 | Informational on 4t65-e mn7, m15 and m76 front wheel drive automatic transmission valve body reconditioning, dtcs p0741, p0742, p0757, p842, harsh shifts or slips. *pe | 07/08/2008 |
| POWER TRAIN - AUTOMATIC TRANSMISSION - CONTROL MODULE (TCM, PCM) | |||||
| 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 - TORQUE CONVERTER | |||||
| 4217 | 10022899 | A slight chuggle, surge or shudder type condition that occurs at 38-45 mph. *nj | 10/03/2007 | ||
| POWER TRAIN - MANUAL TRANSMISSION - SHIFT PATTERN INDICATOR | |||||
| 08-07-30-007 | 02/01/2008 | 10024233 | Ei08045 - key can not be removed from ignition with gear selector in park, shifter can not be moved from park position. *nj | 03/27/2008 | |
Consumer Complaints
| Fail date | miles | occurences | Purchase date |
|---|---|---|---|
| POWER TRAIN | |||
| 03/06/2013 | 150000 | ||
| I was driving on the highway leading into an overpass. as l entered onto the overpass my service traction control, engine power reduced, and service throttle body disabled flash across my dash board, killing the power to my vehicle and locking my steering wheel. while i was stopped unable to move my vehicle, cars flew me and i was almost hit. at one point another vehicle was almost ran off the road due to oncoming traffic trying to dodge me. this was the worst experience of my life. i have never feared for my life like i did at this time. after doing my research online, i have found many others have been in my situation. i was told that my accelerator pedal sensor has gone bad. i feel that gm should be held responsible and needs to remedy the situation before someone is killed. | |||
| 01/16/2012 | 60000 | ||
| Tl- the contact owns a 2008 chevrolet impala. the contact stated that whenever decelerating to a stop or when attempting to accelerate from a stop, the vehicle would independently shift into low gear and start to jerk violently. the failure recurred intermittently. the vehicle was taken to the dealer who inspected the vehicle but could not determine any failure. the manufacturer was notified who informed the contact to take the vehicle back to the dealer. the vehicle was not repaired. the failure mileage was 60,000 and the current mileage was 71,000. kmj | |||
| 01/16/2012 | 60000 | ||
| Tl-the contact owns a 2008 chevrolet impala. the contact stated whenever the vehicle stops at a stop light and getting ready to move, the vehicle would shift into low gear and start to jerk violently. the failure recurred intermittenly. the vehicle was taken to the dealer who inspects the vehicle but could not find any failure. the manufacturer was notified who informed him to take the vehicle back to the dealer. the vehicle was not repaired. the failure mileage was 60,000 and the current mileage was 71,000. mw | |||
| 11/11/2012 | 117000 | ||
| Tl-the contact owns a 2008 chevrolet impala. the contact stated that while driving 70 mph, the vehicle erroneously shifted into neutral, causing the vehicle to stall. as a result, another vehicle crashed into the rear of the contact's vehicle during the failure. the contact was knocked unconscious. the driver and the contact suffered a concussion. the contact also suffered an ankle injury. the driver of the other vehicle suffered a leg injury. a police report was filed. the contact stated that the failure had also occurred prior to the crash. the contact did not take the vehicle to a dealer or mechanic for diagnostic testing or repairs. the failure mileage was 117,000. kmj | |||
| 11/11/2012 | 117000 | ||
| Tl-the contact owns a 2008 chevrolet impala. the contact stated while driving 70 mph the vehicle shift neutral causing the vehicle to stall and decelerate. a vehicle crashed into the rear of the vehicle during the deceleration. the contact was knocked unconscious. the driver and contact suffered a concussion. the contact also suffered an ankle injury. the driver of the other vehicle suffered a leg injury. a police report was filed. the contact stated the vehicle shift out of gear previously. the contact did not take the vehicle to a dealer or mechanic for a diagnostic test. the failure mileage was 117,000. jo | |||
| 02/14/2012 | 73000 | 1 | |
| At a stop sign on signal, vehicle would not shift into 1st unless stepping hard on gas. transmission would slip until engaging at higher rpm. this has happened on a number of occasions and has been taken to the dealer to be looked at. dealer can't seem to replicate the issues i've had. have had dealer service manager with me and it still would not to it. 10/1/2012. doing the same thing. 83,000 miles. gm and dealer aware of previous issues. have not contacted dealer of gm this time. i give up. *tr | |||
| 02/14/2012 | 73000 | ||
| At a stop sign on signal, vehicle would not shift into 1st unless stepping hard on gas. transmission would slip until engaging at higher rpm. this has happened on a number of occassions and has been taken to the dealer to be looked at. dealer can't seem to replicate the issues i've had. have had dealer service manager with me and it still would not to it. 10/1/2012. doing the same thing. 83,000 miles. gm and dealer aware of previous issues. have not contacted dealer of gm this time. i give up. | |||
| 08/06/2012 | 71000 | 1 | |
| Accelerating at approx. 30% onto interstate on-ramp, engine rpm flare when shifting into 3rd from 2nd, and into 4th from 3rd. has repeated off and on intermittently since. fluid is not burned/deteriorated. *tr | |||
| 08/06/2012 | 71000 | ||
| Accelerating at approx. 30% onto interstate on-ramp, engine rpm flare when shifting into 3rd from 2nd, and into 4th from 3rd. has repeated off and on intermittently since. fluid is not burned/deteriorated. | |||
| 03/15/2012 | 68000 | 1 | |
| Three months after i bought my car i got in it about 7 am to go to work. when i put my car in reverse i heard a noise so i looked at the screen and the check engine light came on and the engine power is reduced light was flashing as well and my car wouldn't go over 40 mph. i called the dealership and they said to bring it in after work and they will look at it. the first time the said it was the throttle pedal assembly so i replaced that. two weeks later the same thing happened, this time they said i had a pinched wire and they fixed it. again it came on when i had been in an accident and i was told the computer was jarred so they reset it. a month later on august 18, 2012 i was sitting at a stop sign waiting to turn right and when i went to turn my car stalled out in the middle of the road and i was almost hit by a car coming around the curve. i got scared so i turned around to go home and it stalled out on me four more times before making it 5 miles down the road. i had my 3 small children in the car with me at the time and they got pretty shaken up as well. *tr | |||
| 12/14/2011 | 55000 | 1 | |
| 2008 chevrolet impala ss with 5.3l ls4 engine and 4t65e-hd transmission experience torque converter failure at 55k miles requiring full transmission replacement. replacement transmission beginning to exhibit same torque converter shudder behavior again and warranty will be expiring soon. 4t65e-hd transmission only rated for 280 ft-lbs torque, ls4 v8 produces 323 ft-lbs. this is clearly negligence on the part of general motors and a solution must be reached for owners of these vehicles! *tr | |||
| 12/14/2011 | 55000 | ||
| 2008 chevrolet impala ss with 5.3l ls4 engine and 4t65e-hd transmission experience torque converter failure at 55k miles requiring full transmission replacement. replacement transmission beginning to exhibit same torque converter shudder behavior again and warranty will be expiring soon. 4t65e-hd transmission only rated for 280 ft-lbs torque, ls4 v8 produces 323 ft-lbs. this is clearly negligence on the part of general motors and a solution must be reached for owners of these vehicles! | |||
| 06/17/2012 | 61000 | 1 | |
| My car shut off with a reduced engine power message with my two small children in the car while the car was in motion. *tr | |||
| 06/17/2012 | 61000 | ||
| My car shut off with a reduced engine power message with my two small children in the car while the car was in motion | |||
| 06/30/2012 | 178000 | ||
| Tl- the contact owns a 2008 chevrolet impala. the contact stated that while going 65 mph, her vehicle stalled. the contact stated that she had to maneuver through traffic in order not to crash. the auto throttle body disabled light illuminated on the instrument panel. the contact did not try and restart the vehicle and the vehicle was towed to her house. the vehicle was taken to the dealer and the accelerator censor had malfunctioned. the vehicle was not repaired. the manufacturer was not notified. the failure mileage was 178,000. the vin was unavailable. ap | |||
| 05/31/2012 | 83300 | ||
| I was traveling on a highway near to my home, and for about a month now the vehicle has come up with an error stating reduced engine power. suddenly, the vehicle simply stalled itself, coming up with a message that stated starting disabled/service throttle. i was traveling uphill at 40mph, now with no power brakes, no power steering, and the engine completely shut off and unable to restart. luckily i was able to pull over and disconnect the battery and reconnect it to restart it. what if this had happened on a highway on or off ramp? or on a corner? or with a vehicle traveling behind me? i believe any vehicle that will just randomly turn itself off due to a part that has had hundreds of complaints that i've just read online is unsafe to be driven on america's highways. i read online that this was a prevalent problem with these vehicles, and i hope i get injured because of it so i can sue gm. | |||
| 12/13/2010 | |||
| Safty issue - vehicle looses power and control. the service stabiltrak and no power to the engine service lights appear and the car looses control and power while driving... multiple incidents gm dealer could not identify/fix. this reoccuring issue is a serious safty concern driving down the road in the snow loosing power and control will cause accidents/injury. | |||
| 11/27/2011 | |||
| I own the impala ltz...rear inner tire threads are worn. i purchased the care approx. 3 mos ago. now i am having to replace the tires. i do have warranty on the vehicle so i am going to take it back to the dealer in hopes that it will be repaired. reading the issues on here... i am having the same problem. | |||
| 12/13/2010 | |||
| Safty issue - vehicle looses power and control. the service stabiltrak and no power to the engine service lights appear and the car looses control and power while driving... multiple incidents gm dealer could not identify/fix. this reoccuring issue is a serious safty concern driving down the road in the snow loosing power and control will cause accidents/injury. | |||
| 07/17/2011 | 50000 | ||
| Tl-the contact owns a 2008 chevrolet impala. the contact stated that after entering her vehicle and trying to leave, it would not shift out of the park position. the vehicle was towed to a independent mechanic and they did not diagnose the vehicle. the vehicle has not been repaired. the failure and current mileages were approximately 50,000. tb | |||
| 02/28/2011 | 50000 | ||
| 2008 impala, each time i drive through water at slow speeds, the power steering locks up and the battery error signal illuminates. the car does not handle whatsoever and there have been near misses on three occasions. this has not proven to be an issue on the highway or on roads at higher speeds over 25 mph. i inquired at the dealership and they were not helpful as the warranty has run out on the vehicle. | |||
| 08/31/2008 | 10000 | 1 | |
| Gm advertises that mileage for average highway driving is 28 mpg. the car does not meet or even come close to this standard. i have tested mileage with 100% highway driving and the max mpg is 23. with some minimal off highway driving (to and from highway) the mpg averages 21 to 22. off highway mpg averages 19. my investigations have found that gm has changed the final drive ratio. at 70 mph the engine rpm is 2,300. that is 300 rpm more that previous model years. *tr | |||
| POWER TRAIN - AUTOMATIC TRANSMISSION | |||
| 10/01/2010 | 68000 | ||
| Tl-the contact owns a 2008 chevrolet impala. the contact stated that while attempting to accelerate from a stop, the vehicle hesitated before jerking into gear. the vehicle was taken to an authorized dealer where they were unable to diagnose the failure. the vehicle continued to intermittently hesitate while accelerating and jerk into various gears. the failure mileage was 68,000 and the current mileage was 84,000. sm. | |||
| 05/06/2011 | 83000 | ||
| Tranmission slips, rolls backwards when accelerating uphill, vibration when acclereating from stop, grindin/ rattling noise from transmission. | |||
| 03/08/2009 | 850 | 1 | 01/27/2008 |
| Tl*the contact owns a 2008 chevrolet impala. the contact stated that the vehicle will roll backwards before moving forward when it is parked on an incline. while driving downhill at 5 mph, the contact placed the vehicle into reverse and the vehicle went forward before moving backwards. the contact feels this is a safety issue. the current and failure mileages were 850. 4/01/09 *nj updated 04/09/09. *jb | |||