Brakes light not working

2003 GMC ENVOY
30,000 MILES • 4.2L • 6 CYL • 4WD • AUTOMATIC
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MOHAMMED ALI JABBAR
  • MEMBER
  • 1 POST
Both sides and third top brake lights not working.
Dec 25, 2018 at 4:11 AM
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 52,796 POSTS
Good morning,

I attached a wiring diagram for you to view.

Check the fuses listed in the under hood fuse block for power on both sides. then check for power to the brake light switch under the dash by the brake pedal.

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

Roy
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Apr 13, 2021 at 8:12 PM
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