2008 gmc yukon brake lights not working but the third brake light does
2 Answers
Check out the fuse first, then the brake pedal switch right near the brake pedal. Next i would check and make sure that the bulbs just didn't go out around the same time. That's 3 easy things you can check and if it's not any of them it's probably a ground then.
2 people found this helpful.
There's a pic of the brake light switch.
1 people found this helpful.