The contact owns a 2005 Chevrolet Impala. While driving 35 mph, the anti-theft system shut down without warning and caused the vehicle to stall. The failure only occurred once. The vehicle was towed back to the contact's residence. The dealer stated that the anti-theft system needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 180,000.

- Euntie, LA, USA

The contact owns a 2005 Chevrolet Impala. The contact noticed that the anti-theft security system warning light was illuminated and it became difficult to move the gear shifter from park. It took the contact between 10-15 minutes to restart the vehicle. The vehicle was taken to the dealer where they repaired the ignition switch. The manufacturer was notified and stated that the vehicle was not included in a recall. The failure mileage was 124,628. Updated 8/28/14 updated 09/8/2014

- Bigrun, PA, USA

There are no events leading up to the passlock security system leaving a motorist stranded at any given time. The failure happens at least once a week leaving the driver stranded at whatever location he/she cuts the car off. Sometimes it will be 5min before the alarm will reset and sometimes it will be days leaving the motorist without a vehicle. Nothing done to correct the problem because in this instance the alarm won't reset so the only alternative I was given by a GM dealership is to have the system disconnected.

- Flint, MI, USA

2005 Chevy Impala often times the vehicle will not start. When this happens the security light on the dash blinks, and, after I wait about 10 minutes, it will start. Upon searching the internet for a solution it is obvious that GM knows there are problems with their "pass-lock" anti theft system but will not acknowledge it or repair it for anyone. My mechanic replaced the battery and found no other problems. Suggests I take it to GM dealer.

- Dade City, FL, USA

The contact owns a 2005 Chevrolet Impala. The contact stated that the security alarm intermittently restricted the vehicle from being started. He never took the vehicle to the dealer for inspection. The current mileage was 7,800 and failure mileage was 6,900.

- Oak Park, IL, USA