2003 Impala ls - headlights go off while driving. Just shut off. Doesn't matter if manual headlight switch is engaged or not. Intermittent failure, sometimes not for two hours, sometime every few seconds, sometimes when switching low to high beams, no specific speed or driving conditions. All interior lights and parking lights appear to remain on when the headlights fail. Sometimes can get headlights back on by switching off and on again, sometimes by flashing low to high, but they don't always come back on regardless of action. Sometimes just have to park the car until daylight. Car had just over 44,000 miles on it when I bought it. Drove for two weeks, but never at night, so not exactly sure of mileage of first incident. Happened second time I drove the car at night. Unable to repeat incident at dealer, but car was in "park" when they looked at it, and it was daytime. It could be happening while daytime, too, but I can't tell from inside the car. I could get a ticket in Maryland for driving with no headlights while using windshield wipers.

- Perryville, MD, USA

I purchased my Chevy Impala 2003 brand new in March of 2003. Every since then when I turn on my headlamps, they turn off at random, which is very dangerous on a darkened road at night. Everything goes off (interior, tail lights, ect).

- Crescent, IA, USA

When the vehicle is under stress (I.e. on steep inclines), the lights intermittently shut off. It occurs more frequently when the driver switches between dim and bright. On once occasion, when traveling at night up a curvy mountain road with a carload of teenagers, the lights went off for at least an entire minute in an area without an emergency lane. The vehicle has been attempted to be repaired four times at wriker in winchester, tn without success.

- Estill Springs, TN, USA

During night driving, the headlights are very dim, even when using the high beams. The consumer contacted the dealer. The service dealer told the consumer what did she expect since she bought a cheap car. The consumer contacted the manufacturer several times regarding the problem with the headlights. The consumer could only see approximately 2-2 1/2 car lengths in front, with dim lights.

- Sterling, MI, USA

At times while driving headlights inadvertently cut off. The cause was undetermined.

- Montgomery, MN, USA

When it rains moisture clouds lens in head light and fog light.

- Rochester, NY, USA

The driver's side headlight has a considerable amount of condensation inside the lens. The dealer and the manufacturer have been informed of the problem, but failed to correct the problem.

- Wallingford, CT, USA