Headlights will not turn off

[Jason263]

1992 Buick Lesabre.

Seems like when the car has been sitting overnight in the cool weather when the fuse is replaced that the headlights will then turn off.

Had the headlight switched checked by dealer. The dealer came to the conclusion that is was the module.


Having to pull out my fuse to turn the headlights off, I noticed the letters LCM written above just where the fuse is.

Does LCM stand for "Light Control Module"?

Is this the Module that the dealer was reffering to?

Where is the LCM Located?

Is it difficult to replace?

Thanks to all who reply....

 

[tech jake]

I can't remember exactly what the deal was but I came across this before. There is a wire that needs to be cut because it backfeeds from somewhere else. This has been a common problem on these cars. Ask the dealer if they know anything about this. This was a simple check and fix. The lamp control module isn't the easiest job and it is pretty expensive also. It is up under the dash on the right side of the steering column. Usually I just unplugged the old module and leave it there and plug in the new one and support it with wire ties. The module could be the problem but I would check on the wire feeding through first. Tell the dealer to check TSB's on the wire. There maybe something on this problem.