Left turn signal flashes fast.
Asked by Jeff Feb 15, 2023 at 03:59 PM about the 2004 Chevrolet Trailblazer EXT LS 4WD
Question type: Maintenance & Repair
I have a 2004 Trailblazer. When my headlights are on, the left turn signal
flashes fast my, left headlight flickers, and my fog lights dimly flicker even
though the are not on. When the head lights are off, the turn signal works as it
should. I am guessing that I have a ground problem. However, I cannot find the
location of the ground for the front lights. Can anyone help me out?
5 Answers
You have a major ground loss in the lighting system. Drop out the wiring diagrams and start checking ground pathways.
I know it is a grounding problem. I need a wiring diagram for front end lighting.
Finding diagrams on line is hard, you usually get the wrong one. Try your local library in the reference section then you can photocopy want you need and take it home, or buy an expensive factory shop manual from the dealership. Sometimes you can find some on EBay.
Problem solved, left front lights are grounded to the left side of the engine block.
I installed extra block to body grounds on my GM truck just cause GM seems to have a lot of grounding issues.
