Rear running lights do not work

1999 GMC YUKON
119,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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ZER0SNYPER
  • MEMBER
  • 2 POSTS
The rear lights that turn on when you turn on your headlights do not turn on. My turn signal and brakes work just fine, but the low power lights that come on with the headlights do not turn on.
Jul 28, 2018 at 2:24 PM
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DANNY L
  • ✓ASE Certified Mechanic
  • 5,648 POSTS
  • ASE Certified Mechanic
Hello, I am Danny.

Let me ask first have you checked the taillight fuse? I have attached a picture. The fuse is in location #9. I have attach a link on how to check a fuse.

https://www.2carpros.com/articles/how-to-check-a-car-fuse
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Jul 29, 2018 at 4:30 PM
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ZER0SNYPER
  • MEMBER
  • 2 POSTS
Tried swapping fuses, and nothing. The lights on trailers work, I have a plug and go connector.
Jul 30, 2018 at 4:28 PM
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DANNY L
  • ✓ASE Certified Mechanic
  • 5,648 POSTS
  • ASE Certified Mechanic
Hello again.

Okay, let me do some research and get back to you. Also, do you mean you have a trailer hooked up and the taillights on the trailer work but not the truck at the same time?

Danny-
Jul 30, 2018 at 6:12 PM
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