Instrument panel functions work intermittently while vehicle is running and flashes on and off. It is a safety concern as the speedometer function does not work while driving vehicle. This problem also affects the ability of transmission to shift into gear properly. When vehicle is checked using diagnostic computer, computer fails to detect code error or identify problem with vehicle.electrical system.

- El Paso, TX, USA

The contact owns a 2011 Chevrolet HHR. While driving 50 mph, the reduce engine power warning light illuminated and the vehicle decelerated. After turning the engine off and restarting the vehicle, it resumed normal operation. The vehicle was taken to the dealer where it was diagnosed that the throttle body sensor needed to be replaced. The manufacturer was made aware of the failure. The vehicle was repaired. The failure mileage was 59,497.

- Ypsilanti, MI, USA

I purchase Chevy HHR in good conditions until I got on the freeway. As I was immerging in to the freeway the accelorator got stuck on 6rpm and was speeding 60mph I tried to slow down and the brakes didnt go down at all. It was all locked up my kids and I freak out with the speed that the car was picking up and how the breaks werent working I decided to use the emergency handdle and some side bushes to slow down the car and nothing worked! I checked to see if the cruise control was on and nothing then I checked to see if it was on drive it was the I pushed hard on the breaks but never once it went down at all it was so hard I force my foot so much and the break handdle emerged off the freeway and immediately hit something more solid to stop the car. It was then we headed to a building but I hit a palm tree. The car exploded black smoke and the airebags went off the front door didnt open and my daughter and I jump off through the small little windows. We thank god we are alive!! my two kids 11 and 8 could have died w me in that vehicle if I didnt exit the freeway before the car kept picking up speed. Was a very scary situation. I would never ever ride a Chevy HHR or any other Chevy as I live. The car is completely destroyed in the front and the windows are cracked.

- Oxnard, CA, USA

The contact owns a 2011 Chevrolet HHR. While driving approximately 50 mph, the contact heard an abnormal noise and the service traction and service ESC warning lights flashed randomly. The vehicle suddenly reduced speed and hesitated as if it would stall. The accelerator pedal did not respond each time the failure recurred and the vehicle jerked violently and reduced speed. The vehicle was taken to the dealer more than once and they were not able to replicate and diagnose the failure. The dealer test drove the vehicle and found no failures. Upon turning off and restarting the vehicle, the computer reset and the warning lights dimmed, but the failure recurred. The vehicle was not repaired. The manufacturer was notified and provided no remedy. The approximate failure mileage was 65,000.

- East Ridge, TN, USA

I was driving a freeway speeds when the engine suddenly went into limp home mode. I received the following dash indications - service ESC, traction off, reduced engine power. Upon further inspection we found a failed accelerator position sensor and we had the following trouble codes stored in the computer: P2135 Chevrolet - throttle/pedal position sensor/switch 'a'/'B' voltage correlation replaced the accelerator position sensor and gas pedal assembly, at this point the car seems fine. I have the failed part.

- Newark, OH, USA

While driving a km/H light came on the dash... everything converted to khp... I now have absolutely no clue on how fast/slow im driving... got to my destination and took a look at my owners manual to see if maybe there was a way to switch back to mph... and go figure... followed the instructions to a T... and it doesn't work... couldn't put in my mileage at the top of this form because it asks for mph and suddenly my dash is only putting out km/H.

- Arlington, TX, USA