I have a '93 Grand Am that has a strange headlight malfunction. They will NOT turn off. If the battery is hooked up, they stay on, ALL the time. Just the headlights. All the other lights only come on if you turn on the parking lights, or all the way to the headlight position. Key doesn't have to be on either. This malfunction didn't occur until after I had the engine out of the car and put it back in. I have been over it with a fine toothed comb. I cannot find the cause of this problem. I also found this same problem and answer posted on this same forum.
" Question: 1992 Pontiac Grand Am 4 cyl mileage: 78000. I walked out on 1 Jan and found the headlights on. Got the keys to start engine fearing dead battery, the car started right up. The lights were not on the night before. Turned off car, removed key, light switch off, headlights stayed on. Hit high beam, headlights went off, high beams came on. Pulled out headlight control unit from fuse panel, headlights stayed on. Unplugged each light individually and in high beam/headlight pair, thinking it might be a short, lights stayed on. Had to unplug lights to get them off.
Answer: If we did not know better, we would suspect the Y2K bug. Without actually “seeing” your vehicle, it is difficult to diagnose the problem. We are guessing at some damage done to the headlight wiring causing a short between a power wire and the headlight wire.&Quot;
This leads me to believe that this is a common occurrance with this particular model car. Hope someone has the answer. Thanks.
Monday, February 27th, 2006 AT 5:05 PM