While driving on the highway I was using the cruise control and the car began to increase in speed without my control. It went from 65 to 90 in a few seconds and I had to slam on the breaks to get it to stop. This has happened several times. Also we can never let the gas get lower then a quarter of a tank or the car just shuts down like its empty. Sometimes the engine will just rev up for no reason and other times it doesn't accelerate properly. You can push the gas and it feels like the speed is delayed but then will catch up.

- Normal, IL, USA

The accelerator hesitates when pressed. The car does not move and will then accelerate rapidly when at a stop and trying to accelerate through intersections. Dealer could not duplicate for repairs. Recurring issue. Also has a popping or clunking noise in back passenger side. Dealer has duplicated but not repaired.

- Saginaw, MN, USA

2011 Chevrolet Suburban 1500. Attorney representing consumer writes in regards to serious structural and safety issues concerning the vehicle. The consumer stated water was leaking inside the vehicle. According to the invoice, the dealer found the water leak coming from the body seam below the dash along the firewall. The passenger and driver front seats made a chattering noise. The dealer greased the tracks. The engine was not running correctly. The dealer replaced the throttle position sensor. Also, the front windshield wipers were inoperative, as well as the rear windshield wiper. The dealer found no power open circuit at the connector and allegedly repaired the wiring to the wiper harness.

- Garden City, NY, USA

The contact owns a 2011 Chevrolet Suburban. The contact stated that an abnormal and overpowering odor was present in the rear interior of the vehicle. The contact's four small children were asleep in the rear row seats and when called upon, did not awaken to respond. The contact exited the vehicle to inspect further and discovered the odor. Additionally, all four children had become asphyxiated by the fumes. Two of the four children were transported to the hospital where it was discovered that the children's asthma reacted to the overpowering odor, and were given medication for treatment. The vehicle was taken to one dealer where it was diagnosed that the rear differential fluid had overheated. The vehicle was taken to another dealer for the repairs where the technician stated that there was no failure and no repairs were performed. The contact also experienced rapid acceleration failure while sitting at a traffic stop. The contact stated that the vehicle was taken to the dealer ten times yet the failure was unable to be replicated each time. The manufacturer was notified of the failure. The vehicle was not repaired. The approximate failure mileage was 400 and the current mileage was 55,000. The VIN was not available.

- Arlington , TX, USA

This is becoming a recurring and reproducible problem. The unintended acceleration occurs while slowing down for a stop sign and depressing the brake pedal. The most reliable way to reproduce the problem is as follows. Be driving about 15 miles per hour, up a slight slope. Move your foot off the accelerator pedal and on to the brake pedal. Depress the brake lightly. Just as the vehicle starts to slow down you will feel the acceleration of the engine as if the vehicle is attempting to maintain the 15 mile per hour previous speed. This unexpected response will last about two seconds and then return to normal (idle) condition. This sudden and unexpected behavior is very unnerving and could lead to an accident if the road conditions were to be slippery.

- Stone Mountain, GA, USA

I have noticed that when decelerating & applying my brakes when approaching a stop that my vehicle actually will accelerate all of the sudden. This has happened on several occasions, not always, but enough for me to be concerned. My daughter also experienced this sudden acceleration when she was driving my Suburban. She, like me, said it happened when she was approaching a stop sign and was applying brake pressure. This should be investigated.

- Sugar Land, TX, USA

When trying to come to a stop the vehicle seems to suddenly accelerate right before stopping. The vehicle is going less than 5 mph and it quickly lunges forward right before it gets completely stopped. Has done this on at least 3 different occasions. If I had been very close to the car/object in front of me I might have hit it.

- Chattanooga , OK, USA

The contact owns a 2011 Chevrolet Suburban 1500. The contact was driving 80 mph to pass another vehicle when the accelerator pedal became stuck, causing the vehicle to exhibit sudden acceleration. The vehicle continued to accelerate up to 90 mph and would not slow down. The contact continuously depressed the brakes before the vehicle finally decelerated. The manufacturer was not notified of the failure and the vehicle was not repaired. The failure mileage was 6,700.

- Garrettsville, OH, USA