Twice within the past month when driving on the interstate while using cruise control my vehicle automatically started accelerating uncontrollably. Depressing the brake pedal did not disengage the cruise control or stop the car from trying to accelerate. In both cases I had the wherewithal not to panic, control the vehicle to the shoulder, put the car in neutral and turn the engine off. After restarting the car the engine immediately continued to accelerate and throttle up to 4000 rpms while still in park. Fortunately, both instances occurred on straight stretches of interstate during less than crowded hours. I shutter to think if this occurred while my kids were driving. I am filing this complaint in hopes that if there are other cases of this happening we can make sure GM can fix this before anyone gets killed. I know other automakers had this problem and were able to correct it through recall. I contacted GM/Buick with my concerns and they acknowledged that this is indeed a safety concern but since my warranty is expired there is nothing they can do but advise me to take it in for repair at my own expense. I have a video I took after the second occurrence once I was able to pull my vehicle over and try to restart it. I am not able to upload it through this form but I can send it upon request.

- Oconomowoc, WI, USA

When driving the traction control light comes on then I get a signal that my engine power is reduced. The speed drops drastically on the highway. Indicators say system stabilization.

- Radcliff, KY, USA

I was driving on the interstate going about 70mph. All of a sudden the light on my console said traction control off, service stabilitrack. My gas would not work, the power steering off and all the power was going. I barely made it to the shoulder. It was very scary also have my two children in the car. I looked up the problem in my book and it said to turn off and wait 15 seconds then turn on. That did not work. I sat there for about 30 minutes. I looked under the hood, underneath the car to see if anything was leaking. Nothing. Finally it would turn over and start. I turned around to go home and about 5 miles from my house, it happed again out of no where. I again waited for about 20 or 30 minutes and it finally started. Now my check engine light is on. I am afraid to drive it now.

- Jamestown, IN, USA

I was in the passing lane on a four lane interstate highway driving over an overpass near rockport, mo. My speed/cruise control was set on 70 mph.there were one or more cars ahead of me in the passing lane and I was passing a semi-truck in the right lane. My vehicle started to speed up, without any input from me. I tried multiple times unsuccessfully to brake and could not slow the vehicle down. I changed lanes in order to not hit the car in front of me which we were almost upon. In doing so, the semi-truck clipped the corner of the vehicle. I was spun on to the shoulder and then rolled several times down the 65 foot embankment. The vehicle was totaled. The passenger sustained bruising and loss of consciousness. He had to be extricated from the vehicle and was taken by ambulance to a nearby hospital and then subsequently airlifted to another hospital. I sustained a compound fracture in my clavicle, 5 broken ribs and a cracked pelvis. I was hospitalized for three days.

- Sheldon, IA, USA

Vehicle power steering fails at slow speeds/ most preveaent when turning, parking and etc. Very dangerous.

- Frisco, TX, USA

The contact owns a 2010 Buick Enclave. The contact stated that while entering a parking lot, the vehicle suddenly accelerated without the accelerator pedal being depressed. As a result, the vehicle crashed into a tree and the air bags failed to deploy. Also, the contact mentioned that steam was emitting from the radiator. A police report was filed and no injuries were reported. The manufacturer was contacted and did not offer a remedy. The vehicle was towed to a dealer. The vehicle was not diagnosed or repaired. The failure mileage was 54,000.

- Baileys Harbor, WI, USA

When accelerating to enter a highway, the transmission seems to slip. The gas pedal drops to the floor and the engine loses all power. On several occasions the accelerator has stuck and the car accelerates or the rpms increase while I am braking. These issues have been happening intermittently and have been happening since 29,000. Car now has 69,000 miles.

- Oxford, CT, USA

The contact owns a 2010 Buick Enclave. The contact stated that while parked, the gear shifter was placed in reverse, but the vehicle drove forward. The contact depressed the brake pedal, placed the vehicle into park and shut the engine off. The contact proceeded to place bricks in front of the tires and shifted the vehicle into reverse. The vehicle reversed and the contact was able to begin driving as normal. The failure occurred on approximately ten different occasions. The vehicle was not taken to a dealer for diagnostics and was not repaired. The approximate failure mileage was 31,000.

- Homer, LA, USA

I recently was driving my 2010 Buick Enclave as I was entering into a busy street after making stop I entered the street I have pressed the accelerator all the way down, once I was on the road I released the pedal but the car remained accelerated. The RPM around 7000, I tried to brake to see if will release the pedal and nothing happened. Finally I put the car in neutral and stopped and turned it off and the car was normal again. I took the car to the dealer for evaluation.

- Mcallen, TX, USA