Brake Light Not Working

Tiny
LTAHOE7195
  • MEMBER
  • 2003 GMC ENVOY
Tail lights work on both sides, but the brake light only comes on for the left side and high middle also works, but the right side brake light does not. Would this be considered a brake light switch issue if one of the 2 sides is not working?
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Thursday, February 11th, 2010 AT 11:31 AM

14 Replies

Tiny
JACK42
  • MEMBER
Hello,

THis sounds like you have a bad connection at the right side light. Here is the brake light wiring diagrams where you can see the two lower lights are connected so if one works the other should as well. Check for power coming to the right socket light/blue wire. Here is a guide to help you.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

and

https://www.2carpros.com/articles/brake-lights-not-working

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is. Cheers, Ken
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Thursday, February 11th, 2010 AT 3:32 PM
Tiny
EJSTADLER
  • MEMBER
Thanks for this post I had a bad light socket they I replaced cost me $34.00 all set! I Love this site.
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Wednesday, December 19th, 2018 AT 1:31 PM
Tiny
ONEAL JOHNSON
  • MEMBER
  • 2003 GMC ENVOY
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 145,999 MILES
Brake lights are not working, I changed both lights, and fuses. Can you help me figure out what it can be
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Wednesday, December 19th, 2018 AT 1:32 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
Check the brake light switch, located on brake pedal arm bracket below driver dash.
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Wednesday, December 19th, 2018 AT 1:32 PM (Merged)
Tiny
TERESAPOLSTON49
  • MEMBER
  • 2002 GMC ENVOY
  • 4.2L
  • 6 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
I have replaced the fuses and I have replaced the bulbs I have replace the brake switch. I have a problem still no brake lights. All lights working tail lights and blinkers work just no brake lights? I even check the fuses floor box and under neath. My hood fuse box. I now can't get the brake switch on the brake pedal with a clip. I can't get the brake lights on either. Help me please.
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Wednesday, December 19th, 2018 AT 1:32 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
Ok, you need a test light or voltmeter to start making checks. Stop throwing parts at this and lets find the failure first

see if you have voltage at the brake light switch

Roy
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+3
Wednesday, December 19th, 2018 AT 1:32 PM (Merged)
Tiny
MONA KLEMENT
  • MEMBER
  • 2002 GMC ENVOY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 85,000 MILES
I have 2002 gmc envoy 4wd with intermittant brake lights. Bulbs are ok, fuses are ok, changed out switch. Brake lights still do not work.
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Wednesday, December 19th, 2018 AT 1:32 PM (Merged)
Tiny
WRENCHTECH
  • MEMBER
When this happens, does the 3rd (high mount) brake light work?
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Wednesday, December 19th, 2018 AT 1:32 PM (Merged)
Tiny
HELJAY
  • MEMBER
  • 1998 GMC ENVOY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 250,000 MILES
How to r+r stop light
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Wednesday, December 19th, 2018 AT 1:32 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
ROOF MOUNTED

Unfasten the brake light assembly retaining screws.
Remove the assembly from the roof, pull the electrical connector through the hole in the roof and unplug the electrical connection.
Installation is the reverse of removal.

WINDOW MOUNTED

Unfasten the brake light assembly retaining screws.
Remove the assembly from its mounting, pull the rubber grommet from the body at the top of the end gate, pull the electrical connection through the hole and unplug it.
Installation is the reverse of removal.
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Wednesday, December 19th, 2018 AT 1:32 PM (Merged)
Tiny
HELJAY
  • MEMBER
The stop light is in the air foil on the tail gate. How do you take off the flair
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Wednesday, December 19th, 2018 AT 1:32 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
Yes that would be the window mounted brake light, there should be mounting screws at each end of the stop light that need removed, not the entire spoiler piece.
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Wednesday, December 19th, 2018 AT 1:32 PM (Merged)
Tiny
LASHANDRA1982
  • MEMBER
  • 2002 GMC ENVOY
2002 GMC Envoy

What is wrong when you hit your brake light and it doesn't light up but when you unlock and lock the truck it will light up than? I have already replace the bulbs.
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Wednesday, December 19th, 2018 AT 1:33 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
Suspect faulty brake lamp switch, located on brake pedal arm under driver side dash.

Have you noticed if your high-mount ( 3rd ) brake lamp works properly?
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Wednesday, December 19th, 2018 AT 1:33 PM (Merged)

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