No brake lights

2001 PONTIAC MONTANA
298,000 MILES
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MOMMA O
  • MEMBER
  • 1 POST
On dash panel both blinker light indicators light up. when vehicle is in park blinkers work front and back. When driving with headlights no lights at all at the rear but everything at the front works! Any ideas? Has this happened to anyone else?
Apr 7, 2019 at 8:13 AM
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STRAILER
  • CERTIFIED EXPERT
  • 53,854 POSTS
Hello,

It sound like the DRL module has gone out. but to be sure here is a guide to help check the power output and the brake light wiring diagrams so you can see how the system works with the DRL module location and instructions on how to fix it below:

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

Check out the diagrams (below). Please let us know what happens.
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Apr 8, 2019 at 1:31 PM