Need help solving problem with 1999 Yukon Denali Lights not working properly

Asked by GuruCDDM6 Feb 02, 2019 at 05:15 PM about the 1999 GMC Yukon Denali 4WD

Question type: Maintenance & Repair

My headlights, brake lights and my signal lights
not working

1 Answer

26,810

Make sure battery has a full charge and connections all good.This is just for headlamps, w/o twilight sentinel. You can see the fifty amp fuse, in diagram. Check the fuse, also, use test light to see if voltage at fuse. At the moment, I haven't looked at your other issues?

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