Question about GMC Envoy
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Posted on Jan 02, 2017
I would start by checking the headlight relay and headlight fuse. You also may wanna check to make sure the bulbs aren't blown out. If those parts check out to be fine and in working order, you may need to replace the turn signal assembly in the steering column. This part controls the hi/low beams. This may sound crazy but, when GM wired their older trucks, they wired the headlights to go from the battery, to the hi/low beam switch, then to the headlight switch (to the left of the steering wheel) then out to the light bulbs. You can kind of test to see if this part is good by making a fist and (with your headlights on) gently hitting the plastic cover for your steering column that is right behind your actual steering wheel. This could cause your headlights to flicker on and off. It's not 100% guarenteed that this method will work, but it may.
Any questions, just ask!
Posted on Feb 02, 2009
Your switch must be working since your indicator is telling you when the high beams are on, so my guess is that your bulbs are faulty. The high beam part. They probably burnt out one at a time, so you didn't notice until the second one went. Change your bulbs, and see if that solves it. If not, let me know.
Posted on Jul 23, 2009
There is a good chance that the bulb itself is burnt out.Most newer vehicles use fuses for the lights.Check your owners manual for fuse and relay locations.The fuse/relay covers should also be labeled.Your vehicle probably has more than one location for fuse(convenience centers) The locations should be in your owners manual.
Posted on Oct 17, 2009
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