The contact owns a 2004 Chevrolet Impala. Occasionally, when the contact attempted to start the vehicle, there was a delayed crank. The vehicle takes several hours to start sometimes. Prior to the failure, all of the warning lights illuminated on the instrument control panel. The vehicle lost all power as if the battery failed; however, the exterior lighting was still operative. The contact also heard a dull humming noise. The contact was advised by another consumer who was experiencing similar failures that the computer chip was not recognizing the key. She took the vehicle to an authorized dealer, but they could not duplicate the failure or provide a sufficient repair. The dealer also stated that there could be several defects with the electrical system: Ignition module; however, they were afraid to make repairs because they did not know if either of the remedies would resolve the issue. The starter and battery were replaced, but immediately after the repair the vehicle failed. The failure and current mileages were 52,000.

- Clear Lake, IA, USA

Security light went on last month. It was taken in immediately for repair. I was told it was the ignitiion cylinder. The car also makes a vibrating noise on accelerator. I was told this was the drive shaft and the catalitic converter. All replaced. The car still made noise when left service at northeast auto center in philadelphia pa where it was purchased. Yesterday the light for security is back on. 2004 Chevy Impala very disappointed. Car has 55,000 miles. At 36K the radiator and water pump went during funeral procession.

- Bensalem, PA, USA

Vehicle has been stalling intermittently at any speed. Vehicle has stalled a total of ten times. The vehicle has been taken to the local mechanic shop five times and the dealership twice but no codes were found during testing. So far I have had new plugs/wires (tune-up), new coil pack, new ignition module and new crank sensor, and new fuel filter. The vehicle completely dies at any speed. Told possibility of bad fuel pump but dealership cannot be 100% certain this will fix the problem. While driving at 70-75 miles an hour the car completely shuts down. It is a miracle I have not been severely hurt or killed. Problems began in May 2007 and have been ongoing since then.

- Brownstown, MI, USA

- the contact stated that when she started vehicle with 70000 miles on it the starter staysed engaged for about 5 seconds. The contact said that this could happen under any conditions. The contact took the vehicle to the dealer and that they could not find a problem. The contact said that this happened several times a month.

- Stone Mountian, GA, USA