left side brake and taillight not working?

2000 CHEVROLET BLAZER
202,000 MILES • 4.3L • 6 CYL • 4WD • AUTOMATIC
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PHIL MANWARREN
  • MEMBER
  • 3 POSTS
The back my left side brake light my left side taillight and my left side backup up light works, and my left side blinker works.



my right side brake light don’t work and my right tail light works and my
right blinker don’t work and my right backup light works


if i put power to the right side yellow wire the brake light works and if i pull the fuel pump relay the brake stay off for a bit and if i push on the brake pedal the fuel pump kicks on and the is only ground on both sides of my LT turn under-hood fuse.
Mar 15, 2023 at 9:13 AM
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MIKE H R
  • CERTIFIED EXPERT
  • 3,094 POSTS
With the fuel pump coming on and the brake light on one side working there may be a crossed wire or a bad ground, Check the light socket on each side to make sure they are clean. and grounded. I have had it happen usually the blinker goes on and off faster letting me know a bulb is blown. To me It sounds like the ground might be the problem. Also check under the dash on the brake light switch for any crossed wires.
Mar 15, 2023 at 11:51 AM
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PHIL MANWARREN
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  • 3 POSTS
Okay, thanks.
Mar 15, 2023 at 1:02 PM
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