Car accelerated on it's own during highway speeds. Was traveling on a 2 lane highway in the desert at 70 mph in #1 lane, attempting to pass a semi truck, went to the #2 lane increased speed up to 75, let off gas once I was back in #1 lane and my car was at 5 RPM when typically it's at 2 RPM or less. My car was increasing speed on it's own & the brake had no power. I used my other foot to kick up the gas pedal and I was able to control my speed again. Very scary situation. No warning lights nor codes to indicate problem. Had my cruise control turned off at that time. Contacted Buick, explained what happen, they gave me a case ref# and will be towing it to the Buick service to have them look at it. I have been in a car when I lost power, but never lost control of the throttle being in full power. Lucky to be alive to tell my story and grateful I didn't kill or hurt anyone on my path. Hoping Buick fixes this issue so no one has to be in a dangerous situation.

- New River, AZ, USA

Car shudders and has problems accelerating when gears shifts. Diagnosis=replace bank 1 camshaft actuator worn timing chains, replace all spark plugs and 3 ignition coils again. (performed pfi system dia test. Codes fired P0017 and P0300 stored. Correlation and misfire coes).

- Raleigh, NC, USA

Hard shifting noted in gears. Car acts like it's in neutral when in reverse. Buick dealership says the wave plate is defect. Other 09 Buick Enclaves are covered by specialty policy. 14404 a. but not my VIN VIN. Same make model and transmission. I was told by GMC customer service to complain here.

- Amarillo, TX, USA

The contact owns a 2009 Buick Enclave. The contact stated that while attempting to accelerate from a stop sign, the accelerator pedal failed to respond. The check engine warning light illuminated. The contact was able to drive the vehicle to his resident. The vehicle was not taken to a dealer. The vehicle not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 130,000.

- Port Arthur, TX, USA

The contact owns a 2009 Buick Enclave. While driving approximately 70 mph, the rpms began to decrease without warning and the accelerator pedal failed, when depressed. The vehicle was not diagnosed or repaired. The failure recurred. The manufacturer was not made aware of the failure. The VIN was unknown. The approximate failure mileage was 133,000.

- Modesto, CA, USA

The contact owns a 2009 Buick Enclave. The contact stated that while the vehicle was stopped in traffic, the accelerator pedal was depressed and failed to operate. The vehicle was towed to the contact's residence. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 130,000.

- Lowell, NC, USA

My cat kept going even after I stood on the brakes with my whole weight several times. I then put it in neutral. The motor raced but eventually slowed. This happened several years ago and the dealer blamed it on "floor mats". I burned up my brakes & tired today. It was not "mats". my phone is 858.945.2713 but I cannot get that phone accepted.

- San Diego, CA, USA

I was driving on the freeway and the car begin begain to flash across the dash that it was reducing engine power. This now happens ever so often when I'm driving I was wondering is this a re-call matter?

- Detroit, MI, USA

In the past I had jerking or slipping of transmission at approximately 40 miles an hour, or the engine was having a coil miss fire. I had 3 new coils installed by dealer under warranty with similar problems before. Took to dealer and they could not determine if transmission was slipping or engine miss firing, but no code on miss firing engine. Slipping or hesitating of transmission is more likely but can not determine since does not act the same consistently. Steering noise started in the winter approximately November 2013, but off and on since; steering seems a little stiff but not failing yet like so many other complaints I have read about here. I was charged $342.81 for dirty throttle body and oil in the air dust tube which might cause misfire, they cleaned and replaced bank 2 value cover and cleared codes, performed idle lean reset. This did not fix problem on 05/19/2014. I returned on 06/10/14 and left car till 06/11/14 the dealer let me use a loaner over night. The dealer said stumble/misfire at times was not acting up enough to diagnose. I had the cars automatic transmission flush service on 02/26/14 and there was no problem at that time. In the course of owning this vehicle I had 3 coils replaced with problems starting 01/05/10 one coil, second coil on 08/11/10. Third coil shortly thereafter, this is after complaining since 12/02/2009 about engine shudder. The misfire/stumble is still happening about 40 mph and sometimes around 20mph if you are slow going but not on a pull or accelerating. We love the car, but the problems are getting expensive and the worry of what else can go wrong is stressful. I did not mention the warranty repairs of water pump going out front motor mount failure, shift lever, airbags, seat belts, left out remote mirror failure, engine and transmission code updates. Dealer seem ok, so GM can not fix or will not due to cost.

- Owasso, OK, USA

The contact owns a 2009 Buick Enclave. The contact stated she was accelerating to speeds of 45 mph and removed her foot from the pedal yet the vehicle continued to accelerate without warrant. She attempted to apply the brakes but the vehicle would not respond. The engine was shut off and she placed the vehicle into park to avoid crashing into a vehicle ahead of her. The vehicle was towed to a local dealer where they were unable to duplicate the failure. The contact stated she had experienced the failure at least twice. The vehicle was not repaired. The failure mileage was 17,500 and the current mileage was 18,000.

- Cedar Lane, TX, USA