Question about 2005 GMC Envoy

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2005 Envoy. The Driver's side low beam went out. Changed bulb and the low beam Driver's side only still will not work. Checked fuse 6 under hood (driver's side low beam 10amp) and it is good. Could # 46 relay be the problem if the passenger side low beam is working?

Posted by mba1172 on

  • 1 more comment 
  • mba1172 Feb 12, 2011

    I'll try the relay# 46

  • mba1172 Feb 12, 2011

    I found the # 53 HMD thanks gonna try it

  • mba1172 Feb 12, 2011

    OKAY i did both the HDM fuse was good and I swapped the #45



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Change the HDM fuse #53(15amp). That supplies the relay that controls both low beams. If that dowsn't work, swap the #46 relay with #45 as a test. #45 is the cooling fan relay, so be sure to put it back. If swapping the relays worked, yo need a new #46 HDM Relay.

Posted on Feb 12, 2011

  • Anonymous Feb 12, 2011

    I'm afraid that's all the information I have on this problem. If someone is finally able to resolve your poroblem, please let me know what finally worked. Just to further my education. Good luck to you.

  • Tom Spedding Feb 18, 2012

    If one side / head light works but not the other and the fuse checks good then there is most likely a problem with the fuse plug. What I found on mine was that the fuse plug (female part) was sprung and too loose to make a good connection. To fix it I took a fuse and added a thin layer of soldier to the posts (male part). This made a good connection when the fuse was plugged in and everything now works.



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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.

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The problem is a Headlight module. Fuse box under the hood has two black modules side by side, the one on your right is the headlight module the one on the left is the fan module. Try swapping them, if the headlights work replace bad module, don't drive vehicle with the bad module in the fan slot. Mine kept going bad because I had a high intensity bulb on one side.

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Both my low beam headlights stopped working on the 2005 Accord EX. The high beams work....any suggestions?

I don't know if it will be very helpful (maybe not if both low beams went at the same time), but the fuses for your low beams are in your under hood fuse box: fuse number 1 (10A) left headlight low, and fuse number 6 (10A) right headlight low. Maybe it's not likely that they would both go at once, but I would check them.
Then, of course, it could be the bulbs.
Last, if not one of the former, then it becomes a matter of having relays and switches checked (not something you really want to do yourself).
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well if you have a beam!!! that means fuse are okay if you have a spare bulb try it and see if this gives you back a low beam as well as hi beam if not look under hood in fuse cluster open lid diagram shows witch is the head light relay good place to start.John

Driver side light

Replace the fuse for low beam under the hood right side in fuse box and or low beam bulbs
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