The contact owns a 2012 Chevrolet Impala. The contact stated that while attempting to drive from a stop sign, the accelerator pedal was depressed but the vehicle failed to respond as the brakes independently engaged. The ABS warning light illuminated. The failure recurred on numerous occasions. The vehicle was taken to a dealer who diagnosed that a harness needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 36,000.

- South Lyon, MI, USA

When driving after every attempt to make a left turn, my service traction control, service brake assist, & ABS light all pop on. Since then it has went on and off for many days until it just finally stayed on permanently. Also message: "stabilitrak service and traction control, brake assist " finally took it to a Chevy dealership in culver city, ca in May 2013 & was told they tested the front ABS connector and traction and found nothing wrong and no code errors. Reset the sensors anyways and adjusted the timing. As soon as I drove out the dealer, same error messages and lights returned. Took car again to same dealer &wastold "I must have drove through water or oily surface and lights would go off after I drove 20 or so miles".lights & errors did not go away.returned to the same dealer again, this time again found no errors but they proceed to replace the tire sensors and reset the sensor id. Lights&codes went off for about a week then returned with a grinding noise when left turn, loose engine power &steering power, light &codes continue to stay on, & stalls for a few seconds when left turn. I have been at a light in the middle of making a turn when the car will stall & not let me take off.brakes appear to lock up.just missed a few car accidents due to stall. Has left me in dangerous situations as I have almost been hit head on & was hit from behind because I could not accelerate and got stuck on the turn. Cannot accelerate in a timely fashion is a huge problem. Because the dealer obviously could not resolve the issue had tire and brake expert shops look at the problem a few times. Also not finding the problem. Finally decided to just try &ignore it but after so many close calls of accidents& endagering my families life it is not acceptable for me to just deal with it anymore or to continue to spend money to try & find problem.forums prove others have the same problem.

- Los Angeles, CA, USA

I was driving down a hill on kalamazoost in lansing mich. My power steering and power brakes stopped working. I pulled on the steering wheel to turn the car into a hedge of bushed on the side of the road. It stopped before I hit them.

- Warren, MI, USA

The contact owns a 2012 Chevrolet Impala. The contact stated that while driving 25 mph, there was an abnormal noise coming from the brakes, which failed to respond. The contact also stated there was a abnormal odor. The failure occurred on numerous occasions. The vehicle was taken to the dealer where it was repaired but the repairs were unknown. The manufacturer was not made aware of the failure. The approximate failure mileage was unknown.

- Osceola Mills, PA, USA

The contact owns a 2012 Chevrolet Impala. The contact stated that while driving 55 mph, he applied the brakes the vehicle shook vigorously. The vehicle was taken to the dealer, who diagnosed that the caliper failed and the technician replaced the caliper on the rear drivers brake. The manufacturer was made aware of the failure. The approximate failure mileage was 44,073. Updated 09/02/14 updated 09/23/15

- Clatskanie, OR, USA

On June 28,2014 while driving down houston tx beltway. I was involved in an accident where my car hit a cement guard rail and brakes fail as well as no airbags deployed.

- Houston , TX, USA

While driving my car highway speed was 65mph, at that rate of speed my vehicle was picking up speed and when I went to press on my brakes, it was if I was driving on ice and my car was skidding. Two days later I stopped for gas and my car wouldn't start, after my 3rd attempt, it stuttered hard time turning over. Once it did I turned it off but the car was still running. I did this several times. Very scared to drive my car back home because I'm out of town. My lights says I have low right tire pressure but I don't, it's back left tire for some odd reason.

- Eastpointe, MI, USA

I was driving and after making a left turn, my service traction control, service brake assist, and ABS light all popped on. It went on and off for many days as I would stop and then re-start the car. I finally took it to a Chevy dealership and was told they tested the front ABS connector and adjusted the timing. Lights and codes went off for about two weeks then popped back on upon making a left turn. In addition to the lights and codes, the car now make a loud grinding noise and the car stalls. I have been at a light in the middle of making a turn when the car will stall and not let me take off- the traction control symbol will come on and I will be stuck trying to accelerate. This is very dangerous as I have almost been hit from behind a few times due to not being able to accelerate in a timely fashion. I have gone on Chevy Impala forums looking for other drivers who may have experienced this are there are a good number of them. It seems to be an electrical problem.

- Hobart, IN, USA

The contact owns a 2012 Chevrolet Impala. The contact stated that the brake pedal had to be applied more than once in order to stop the vehicle. The brake pedal could also be abnormally depressed to the floorboard. The vehicle was taken to the dealer where the brakes were bled however, the failure was not corrected. The contact also stated that the air conditioning unit would exhibit a loud noise. The pulley and belt tensioner was replaced in an attempt to correct the air conditioning failure but to no avail. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was 4,500 and the current mileage was 12,746.

- Eluess , TX, USA

Same incident twice. I am driving either at low speeds (5 to 10 mph) or at 30 mph. The light service stabilitrak and brakes comes on. After I turn off the car, the warning lights and the message go off. I took car to dealership but they said they could not help because the warning message is off. I have seen messages across the internet posts that other Impala (2012) are doing the same thing.

- Columbia, SC, USA

Brakes have what I feel is excessive amount of fade especially after just a few stops seems to occur more at speeds over 50 mph.

- Stewartstown, PA, USA

When stopped at a red light the peddle would slowly drift towards floor. The car began to roll as if the brakes were releasing. I applied more pressure to the pedal halting the vehicle. I took the car to a dealership and was told it was due to the location of the master cylinder and GM was aware of it. My concern is that this may cause loss of brakeing when in motion.

- Mount Holly, NC, USA