my high mark lights don't turn on

Asked by Jul 31, 2013 at 03:46 PM about the 2003 GMC Sierra 2500HD 4 Dr SLE Crew Cab LB HD

Question type: Maintenance & Repair

I have replaced all 6 lights, 2 were burnt out in the middle portion and they still
won't turn on

4 Answers

let's see if we can learn something from your electrical schematic~

looks like your switch is bad~

I see the "fog lamps" are on a separate rocker switch....odds are your headlight switch is failing...not seeing a relay for this so it's whizweeou all the way thru the switch~

tidy bit of detective work...kudos....me~

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