Question about 2004 GMC Envoy

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Low beams wont turn on 2004 gmc envoy replaced the bulbs and fuses and relays what else could it be

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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  • GMC Master
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The switch itself.

Posted on Jul 24, 2016

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Posted on Jan 02, 2017

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centralvalle
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SOURCE: Both low beam headlights on my 05 GMC envoy do not

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

  • 327 Answers

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.

Thanks

Posted on Aug 09, 2010

  • 8 Answers

SOURCE: 2003 gmc Envoy Low Beam Headlights both quit at

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.

Good Luck,
Sam

Posted on Sep 13, 2010

  • 1311 Answers

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

ryanlutton
  • 1131 Answers

SOURCE: 2003 envoy low beams will not work.fuses

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.frontfuses.jpg

Posted on Feb 21, 2011

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1 Answer

I have no low beam headlights. already checked bulbs, fuses, relay and dimmer switch. can you help?


Before you replace the #46 HDM relay (in the fuse block under the hood) try exchanging it with the #45 cooling fan relay and see if your low beam lights work. If they do, the HDM relay (actually solid state module, not a relay) is bad.

Jul 30, 2014 | 2004 GMC Envoy

1 Answer

My low beam headlights won't turn on in 2004 gmc envoy


It's the headlamp relay #46. If you want to test it, swap it out with the cooling fan relay #45 and see if your headlights work. If they do you know this is the fix. Found the solution online a couple of years ago and it was spot-on. The part was $45 at autozone at the time.

Aug 12, 2012 | 2004 GMC Envoy

3 Answers

Checked fuses , relay, dimmer switch in my 2004 GMC envoy, still no low beam headlights. Pleas help:(


If you have checked and discounted the relay, the only things left are the headlight switch and the wiring and to the headlights. Try the switch first. It is not impossible that both bulb's low beam filaments may have fused at the same time, unlikely but not impossibly. (It will not be fuses, unless two fuses blew together).

Apr 07, 2011 | 2004 GMC Envoy

1 Answer

Is there more than one relay switch? I found one for the high beams but not one for the low beams. I changed my dimmer switch and the bulbs but nothing has helped, I have high beams just not low beams and...


The low beam relay is #46 in the underhood fuse panel. check its contact pins before replacing it. If they are corroded, try cleaning them first.

Nov 28, 2010 | 2004 GMC Envoy

1 Answer

I have a 2004 GMC Envoy and my low beams are switching off periodically while I'm driving but my high beams still work, why is this happening?


You may have an intermittent low beam relay. Check Relay #46 in the underhood fuse panel, pull it out of its socket and examine the pin contacts, if they are corroded clean them. If they look good, replace the relay.

Nov 06, 2010 | 2004 GMC Envoy

1 Answer

2006 GMC Envoy low beam headlights dont work. All fuses, and bulb filements, are fine.


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.

Thanks

Aug 09, 2010 | 2004 GMC Envoy

2 Answers

2003 gmc Envoy Low Beam Headlights both quit at the same time. Checked fuses and replaced bulbs. No dice. ????


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.

Good Luck,
Sam

Jul 01, 2010 | 2004 GMC Envoy

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