Accelerator Stuck problems of the 2011 GMC Acadia

Driving 40mph, accelerated into the left lane to pass. Removing my foot from the accelerator, my vehicle continued to accelerate with the pedal moving to the floor. After repeatedly stomping the brake and depressing the "cancel cruise" control button, I was able to regain control of the vehicle before hitting the vehicle ahead of me. This happened about 3. 5 hours into a 9 hour trip, so the vehicle was warm. I was able to repeat the condition 4 times. Twice with the cruise on but disengaged and twice with the cruise turned off. I discovered that stomping the brakes or depressing the cancel cruise button cleared the condition. After a couple of stops, condition occurred a 6th time as I attempted to pass a vehicle going 50mph. As I depressed the accelerator, the symptom recurred with my vehicle accelerating to 80 mph before continually depressing the "cancel cruise" button released the stuck accelerator. On 3 June, took the vehicle to the dealer service department. Neither dealer tech nor I could reproduce the problem. . Thinking vehicle temp coud be the difference, I left the vehicle with the technician. He drove it for 3 hours and approximately 150 miles and could not replicate the problem. Dealer opened gm technical assistance case (71-1189923303) and allegedly gm has no record of similar problems. The dealer had no recourse but to return the vehicle to me. I called gm customer assistance and registered my concern. Several days later, gm customer assistance called saying that gm had no record of similar incidences but had logged another vehicle service request (71-1191383116). I questioned this revelation as I had found several documented similar cases with Acadias on edmunds. Com. My wife normally drives this vehicle. I am unsure how she would have reacted had this happened with her driving. It is definitely a major safety concern.

When I tried to park my 2011 Acadia sle, the accelerator became stuck causing the front of my car to crash into a health club wall. When I saw people running inside the health club I thought I had rolled over someone. So, I tried to back up and when I put the car in reverse it shot backwards with a rolling force and hit an iron post. To keep the wheels from continuously rolling, I had to slam the gear into park and turn the ignition off. I believe this accident should be investigated further before someone else is injured or killed.