Question about 2002 GMC Envoy
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Posted on Jan 02, 2017
Do the non working bulb holders have power at the bulb terminals?If not back track to the one that works.The flow of power or earth is bad and its probably happening between working and non working.Do you have a trailer plug?make sure the joins are secure.Maybe two wires touching?Have you put an earth to one of the bulb holders that dont work.Try taking the working bulb out and see if the others light up,Hard to do or suggest test without vehicle there to work on and makes it hard not knowing exactly what tests youve done but suggested a couple in the hope that theres something that helps.Good luck
Posted on Nov 17, 2008
i have replaced many of these. it is the multifunction switch under steering wheel cover.the third brake light is on different circuit .so replace muti switch and you will fix your problem thanks please rate this answer
Posted on Feb 01, 2009
It would then be a bad ground. Start at the bulb fixtures cleaning and refastening; look for cracked broken wires as you go. A little multimeter will help.
Posted on Jun 09, 2009
SOURCE: trailer brake controller problem
I found the problem. Talking with a technician from the controller company, we determined that it was a fuse problem. I found that the fuse to the CHMSL was blown.
Posted on Jun 30, 2009
follow the wiring wherit passes through from the hatch to body of vehicle sometimes they pinch or corode and break, this sounds like a broken wire to me,
Posted on Sep 25, 2012
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