Questions & Answers for: gm headlight switch wiring diagram

...GM iring diagram and found that the headlight circuit runs directly through the main headlight switch with no fuse or relay at all. The high low beam switch cannot shut the circuit off completely and ...

...GM cause they are Better! There are Relays for the Tail Light and the Dash Lights Seperate. Look in the Fuse Relay Box under the Hood. These Should both be Under there and will be Labeled. "Brake L" ...

...gm wiring is terrible, your best bet pull the wiring apart in the front of the car and inspect each wire splice they tend to corrode and once it gets to a certain point it wont allow any electricity ...

may need to start by looking at the headlamp switch. I cant believe any GM dealer could not help you. Forget anyone from a auto parts store being any help. I can ck tomorrow when at work for a diagram

...switch was just replaced and not differance). Do you have a professional scanner ,do a scan of the whole vehicle . Instrument cluster , BCM , etc... Not OBD2 scan from autozone or advance etc.... ...

...headlight system on your car, pretend the two inner "high beam only" headlights aren't there and you'll be fine. The wire colors shown here represent a typical GM vehicle (the green and tan ...

headlight switch area.It would also be a good idea to get access to a wire diagram from a factory repair manual and find out if GM had any Technical Service Bulletins addressing this problem.  If

...GM began using a lighting control module (LCM) at least as far back as 1992, tucked unhandily up under the dash, and wired between the headlight switch and everything else in the lighting circuits. ...

...HEADLIGHT. I CHECKED THE FUSES THEY ARE ALL GOOD.I DON`T WHAT ELSE TO DO. -Unplug the wire and turn it on and check the line to see if there is voltage there or not. -If not then the line is broken ...

...GM Instrument Cluster Speedometer Gauge Stepper Daytime Running Lamps (DRL) The ambient light sensor is a light sensitive transistor that varies its voltage signal to the body control module (BCM) in ...