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Brake lights wiring diagrams please?

Tiny
EKSMALL
  • MEMBER
  • 1999 CHEVROLET SUBURBAN
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 225,000 MILES
All 3 brake lights are not working. Fuse is good, bulbs are good, changed brake light switch. Still not working, hazard lights do not work. Tail lights work when headlight switch is on, interior lights work. What else could it be?
Saturday, May 3rd, 2014 AT 4:00 PM

1 Reply

Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

Here is the diagram you requested. Sounds like have an open on the brake circuit wiring. Here is a tutorial showing how to test electrical wiring:

https://www.2carpros.com/articles/how-to-check-wiring

I've attached the brake system wiring diagram below for your vehicle. I've cut the picture in half so you can view larger. Hope this helps and thanks for using 2CarPros.
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Friday, February 5th, 2021 AT 10:53 AM

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