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Buick
Century
Exterior Light
Brake Light
Not Working
brake lights not working?
2003 BUICK CENTURY
200,000 MILES • 3.1L • V6 • 2WD • AUTOMATIC
DARRELL SIEGRIST
MEMBER
1 POST
Replaced bulbs, markers work fine. even switched the left side pigtail with the right side still no brake light?
Jan 24, 2021 at 6:07 AM
KASEKENNY
✓
Experienced Mechanic
18,907 POSTS
More than likely we have a ground issue if this is the only light that is not working.
We need to check to see if there is voltage on the ground side of the bulb.
Here is a guide that will help with this testing:
https://www.2carpros.com/articles/how-to-check-wiring
and
https://www.2carpros.com/articles/brake-lights-not-working
Below is a copy of the wiring diagram that will help with this. Please let us know what you find. Thanks
Image (Click to enlarge)
May 10, 2021 at 11:26 AM
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