Question about 2004 GMC Envoy
Low beams wont turn on after replacing bulbs fuses relays this is a 2004 gmc envoy the wire on the one side was burt.
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Posted on Jan 02, 2017
Check your headlamp relays under the hood, should be located on either the L/H or R/H fender well , could be inside a black plastic box labled fuses and relays... there will be a label on the underside of the lid to this box locate the relays as per lables... please rate my help thanks...
Posted on Aug 06, 2009
SOURCE: 2006 GMC Envoy low beam
Hello, try to start by checking the headlight relay and headlight fuse. You
also may want to 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.
Posted on Aug 09, 2010
Relay in fuse box under hood on driver side wheel well labeled HDM, #46 on 2004 Envoy XUV. Swap with relay #45 labeled "Fan" to test. That was my problem.
Posted on Sep 13, 2010
SOURCE: the auto headlights on my
Relay #46 in the underhood fuse panel is probably bad. You can verify this by swapping it with relay #45. Also, sometimes the relay contacts become corroded, check these when you have the relay out.
Posted on Feb 03, 2011
For the I6 engine there is a relay for low beams, it's relay # 46. Switch it with relay #45 (runs the fan, same model relay) and see if your lights now come on. These 2 relays are the only 2 black ones in there (part # 15016745). Also, try to clean the contacts very well on the fuse box and the relay. If not, you may have some frayed wiring in the harness.
By the way, the high beam relay is #43, the gray one next to the windshield wiper relay #42.
Posted on Feb 21, 2011
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