Automatic Transmission Control Module Problems of Chevrolet Impala

The contact owns a 2015 Chevrolet Impala. The contact stated while driving approximately 70 mph, the transmission was slipping and unexpectedly downshifted to a lower gear. The contact stated that the vehicle violently shuddered. The contact stated that the check engine and stability control warning lights were illuminated. The contact stopped the vehicle due to the shaking and shuddering and had the vehicle towed to a dealer. The dealer diagnosed the vehicle and determined that the transmission control module and a wiring harness needed to be replaced. The vehicle was repaired. The contact stated that the failure recurred two more times. The contact had taken the vehicle to the same dealer, and the tcm was replaced. The vehicle was repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 84,000.

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I was driving my 2017 Chevrolet Impala it started jerk and then stall out I had to have the car towed home onstar sent me the codes saying it was ecm and tcm problem that very scary I was in the middle of the road.

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I have taken it in on several occasions and been told there is no active code. My transmission control module constantly looses communication. Through my research I have found numerous accounts of this part failing and gm not repairing it, nor issuing a safety recall. I took the vehicle in and was told it was a common failure. The failure of this part has put myself and my children in danger, the computer failure causes the car to randomly shift gears while driving jerk violently and completely shut off at times. Currently it is stuck in 1 gear. I am a single parent, I am scared to travel with my children in the car, anywhere including school and medical appointments. This issue happens while driving the vehicle at all speeds including highway speeds. The last time I took it in the dealer stated, the vehicle was not safe to drive they notified my warranty company, which took 2 weeks to look at the vehicle at which time I was told that the fault code was not active but only in the history of the computer and they refused to repair it. Being that this is a known issue by gm I believe a safety recall should be issue before someone is hurt or killed, if they havent been already. The service advisor informed me that they were instructed to clear the codes from my obd let the car sit and see if the issue returned. This issue has affected multiple gm vehicles yet they refuse to make the repair necessary to make the vehicle safe. Questions; 1)tcm fails, yes it is available for inspection. 2) vehicle randomly shifts through gears including park, at all speeds. Causing car to jerk violently, shut off or get stuck in 1 gear. It has shut off while traveling at 75 mph on the high with my children in the car on multiple occasions. 3)yes at covert chevy in hutto, TX. Even the service department was scared to drive it. 4) I dont know what the dealer inspected. 5)yes service stabilitrack and power steering and check engine light with code u0101.

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Letter from constituent who experienced problems with her 2008 Impala, seeking reimbursement for the repairs she believes were all part of a recall. The consumer stated on April 1, 2014, she had just exited the interstate highway, when suddenly the engine shut off. The vehicle would not re-start and a message appeared on the dash that read throttle control system. The vehicle was towed to a service station. The throttle body was replaced. On April 19, 2014. The check engine light illuminated as she was driving. She pulled into a parking lot, and turned off the engine. The vehicle did not re-start, once again, the vehicle had to be towed. The power train control module had to be replaced and the computer was re-programmed.

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I was driving down a very busy street looking for a restaurant and my car made three dinging sounds indicating a issue. Before I even could read what was displaying on my information panel the car lost all power steering and engine power. Because I was traveling at about 55mph I could very luckily coast to a parking lot near by. After coasting to a parking spot I put the car in park and read the information panel, it read reduced engine power, service stabilitrak, and service throttle body. Because I know most american made cars are pure garbage I wont drive one without a ebdii scanner. After reading the ebdii scanner it showed a p0601 code, which indicates a pcm memory issue. After clearing the code it started right back up and drove for about 10 more minutes until I was at a parking lot on a steep grade. The 3 dings happened again and my engine shut off causing me to roll backwards about 10 feet almost into over vehicles. I have done some research on this and have come to found that this is a engineering fault caused by to much current flowing into the power control module, which creates a small hairline crack on the pcm onboard computer, with which many many other gm products have experienced. I feel a recall should be done on all gm products affected by this, this is very unsafe and I feel could lead to deaths. I am a 21 year old male who could control the vehicle with no power steering, imagine a student driver encountering this issue and not being able to maneuver the vehicle away from other drivers or even innocent pedestrians! I know for a fact this has happened to many other gm vehicle owners so does a body count have to stack up before a recall is issued by gm??.

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The contact owns a 2006 Chevrolet Impala. The contact stated that while driving approximately 25 mph, the check engine light illuminated on the instrument panel and the vehicle began to shake violently. The vehicle was towed to an independent mechanic for a diagnostic test. The mechanic cleaned the throttle body. The failure continued after the repair. The vehicle was taken back to an independent mechanic and the dealer approximately eight different times. The vehicle was repaired when the pcm was replaced and reprogrammed at the dealer. The approximate failure mileage was 80,000.

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Consumer states: body control module failure. When trying to start it's like a dead battery, no noise like someone took the starter off. Have some lights come on but not all.

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Car was running in my driveway while in park. I went in the house because I fogot my cell phone. About two minutes later the car crashed through my fence and I ran outside and jumped in it as we crashed through the garage door. The car had to be in park because the door opened from the outside and the wheels were locked so it drove straight. It has now been at the dealership for 20 days and nothing has been done. Gm hasn't been any help and my insurance cannot touch the car until gm inspects it. My rental runs out in 8 days.

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Car lurches, also makes grinding noise code-op-730 loosing communication with pcm replace pcm.

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Abs light keeps blinking on anf off. Also, traction control light on. Brakes and rotors keep prematurely wearing out. Had vehicle repaired twice, but problem still exists.

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