Question about 2003 GMC Envoy
Since you are talking about three different circuits, the only common thing is the ground circuit. I would check that on both sides as well as power at the lamp sockets. Could be a problem somewhere in the harness.
Posted on Dec 10, 2012
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Posted on Jan 02, 2017
the simple way is just switching them.Most of them are identical.
you need to make sure a ground wire is not the cause back there.
Being as old as it is it is very possible a bad ground or the sockets themselves,but thats unlikely.It shouldnt be the switch but its possible.I will send you the wiring diagram as soon as i find it.
Posted on Aug 19, 2009
Testimonial: "THANK YOU!!! I'll give your solution a try this evening and let you know the results. Jim T"
there is most likely a short in the wires have you put a tow package on it if so did you splice in to the lines check all wires and see if they are burnt any were most likely short
Posted on Jan 05, 2009
Hi, are the tail lights and the brake lights in the same light unit?
If so, there is a possibility the bulbs are in the wrong way. If it is a stop/tail bulb then there are two locating pegs on the side of the metal part. If you look, one is higher than the other which has to locate into the correct slot in the holder.
Another possibility is the bulb is wrong, there are double and single contacts. Check the contact on the base of the bulb is the same as the contacts in the holder.
Posted on Feb 09, 2009
Check your brake light switch at the pedal. This controls the lights and disengages the cruise when stopping. I'd look there before I go anywhere else. There may just be a wire loose. Could be a simple fix.
Good Luck and hope this helps.
Posted on Mar 15, 2009
No interior dash lights and no tail lights on a GM usually means it's time for a new headlight switch. To check the fuse, it's in the middle of the fuse box marked instrument cluster. If the fuse is good, buy the switch. Lights blowing fuses means you either have a bare wire running down the driver's side of the truck or up into the tail light assemblies. There is also a plug in under the box on the driver's side near the bumper that may be getting wet. Hope this helps.
Posted on Oct 11, 2009
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