Question about 2001 GMC W3500

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Turn signal relay lights

My hazards work and left turn signal. But the right turn signals do not work. It sounds like the reley is clicking, it is clicking faster like when it does when bulbs are out but they are good bulbs.

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  • Tyler Olah May 10, 2013

    Sorry its actually W4500

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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proton77
  • 1183 Answers

SOURCE: Replacing front right turn signal bulb

Well the owners manual for your machine says "owner's manual simply states that for all bulb replacement not shown to consult the dealer "

Best way I found was as follows:

1) Loosen lower, forward portion of driver side inner fender liner to gain access from behind by removing one 10mm screw from lower, forward area of fender liner (this is the one that threads into a nutplate on washer fluid res.) and one of the forward, outboard little screws (thinking it was 7mm) that sits just inside the fender. This will allow you to pull the liner back and gain access to the bulbs from low and behind.

From here I still was not quite able to access the bulbs from behind so I had to continue on by loosening the headlamp housing to gain additional clearance. Its possible that those with smaller hands *might* be able to get them. If not, continue as follows:

2) Remove the plastic upper radiator valance by pulling ~ eight plunger/grommet panel fasteners (I noticed one of mine was AWOL right off the bat).
3) Remove front grille by pulling four 10mm screws along top and then popping out six Tinnerman-style clips. I found it easiest to simply compress the clips from behind using channel locks and then gently pulling grille away from vehicle to unseat them one at a time.
4) Pull back the inner fender liner and look inside to locate one 10mm hex head screw securing lower headlamp housing. The screw head faces outboard and is about 3-4" forward of the inner liner.
5) Remove two 10mm screws common to the upper headlamp housing. Housing should now be "free".
6) Gently pull on the headlamp assembly while "wiggling" it side-to-side to disengage two aft-facing, alignment pins (located on the outboard side of the housing) and one small plastic tab (located on the inboard, lower portion of the housing).
7) At this point you should be able to wriggle the headlamp housing forward and inboard enough to gain access to the back side of the turn signal bulbs from behind. Be careful not to scratch the fender or chrome bumper "ear". Its a TIGHT fit.
8) Pull the inner fender liner back and then reach up through an opening in the sheet metal to get at the signal bulb connectors. Again, CCW to remove and CW to install the bulbs connectors into the housing.
9) Install is reverse. Be careful to properly realign the headlamp housing into the fender prior to buttoning up everything else.

Thanks
Mandeep

Posted on Jun 15, 2008

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  • 1 Answer

SOURCE: brake lights/rear turn signals

I had the same problem with my 1999 Yukon. The electric board needed to be replaced. Rust starts to build up and shorts out or blows the bulb. The dealership charged $73.60 for the part and I installed it myself (Saved $30).

Posted on Jan 05, 2009

joecoolvette
  • 5660 Answers

SOURCE: no brake/hazard lights,have running/turn signal lights

Suggest you change hazard flasher 'can' first, then go to the hazard switch. I'm betting it's the flasher can.

Posted on May 11, 2009

cadman000
  • 607 Answers

SOURCE: bottom brake lights and hazard lights do not come on. All other lights work including top brake lights. Fuses and bulbs checked.

Check for power out of brake light switch by brake pedal. Of its faulty , the 3rd brake light will still work. Hope this helps

Posted on May 23, 2009

ryanlutton
  • 1138 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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