Why wont my tail lights work

Asked by Sep 13, 2012 at 11:17 PM about the GMC Sierra 1500

Question type: Maintenance & Repair

i have a 1991 gmc sierra 5.7L and my tail lights dont work but my rear signal, reverse and brake lights still work. what would cause this?

4 Answers

36,785

Do you know how to read a wiring diagram and diagnose a wiring issue. If you do then pick up a chiltons and work through the wiring. If you don't then I can't provide you much info outside of that. I don't know off hand how these are wired. I'm thinking there is a possibility it may be a headlight switch. I don't have a diagram to see whether it could be or not.

2 people found this helpful.
805

if its the running/parking lights that arnt working check for power at lights when u have them on, if no power go to the fuse block and find the fuse for running lights or parking lights maybe blown fuse or something

1 people found this helpful.
70

bad ground connection i had that problem

5 people found this helpful.

If your dash lights are out to and the fuse is good look for power at the fuse box if yes your wires under the bed are either cut or apart check tje brn wire for continuity

Your Answer

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 58,462 nationwide Sierra 1500 listings starting at $1,900.

ZIP:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,590
  • #2
    John Saffrahn
    Reputation
    3,870
  • #3
    Glenn Clingenpeel
    Reputation
    3,680
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,781 Great Deals out of 149,286 listings starting at $1,495
Used Ford F-150
2,344 Great Deals out of 215,477 listings starting at $1,300
Used GMC Sierra 2500HD
142 Great Deals out of 15,260 listings starting at $3,500
Used Toyota Tundra
478 Great Deals out of 38,526 listings starting at $1,999
Used Chevrolet Silverado 2500HD
361 Great Deals out of 29,859 listings starting at $2,500
Used Ram 1500
901 Great Deals out of 119,059 listings starting at $5,995
Used Dodge Ram 1500
316 Great Deals out of 9,549 listings starting at $800
Used Toyota Tacoma
439 Great Deals out of 44,078 listings starting at $1,995
Used Chevrolet Tahoe
528 Great Deals out of 36,655 listings starting at $1,375
Used GMC Yukon
311 Great Deals out of 19,755 listings starting at $1,400
Used Ford F-250 Super Duty
374 Great Deals out of 42,218 listings starting at $1,600
Used Chevrolet Colorado
295 Great Deals out of 41,682 listings starting at $1,900
Used Chevrolet Camaro
224 Great Deals out of 28,922 listings starting at $3,900
Used GMC Canyon
105 Great Deals out of 15,009 listings starting at $1,100
Used GMC Sierra 2500
3 Great Deals out of 161 listings starting at $4,800

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.