On my 99 Yukon slt, non of the 3 brake lights turn on, checked the bulbs and they are good, same with the fuses, what should I check next?

Asked by Sep 21, 2013 at 04:43 PM about the 1999 GMC Yukon SLT 4WD

Question type: Maintenance & Repair

3 Answers

121,045

Brake light switch on the brake pedal would be what I would check next. Could be out of adjustment or faulty. Some have a small rubber plug that the plunger rides on in the pedal. These tend to come loose sometimes not allowing the switch to be activated properly.

2 people found this helpful.

1999 GMc Yukon Brake light switch. Never saw one looks like this but looked at three parts suppliers and here it is

6 people found this helpful.

But I agree with dandyoun. That's the next step. You remove a panel under the steering column to get more room. Pull the switch up from the brake pedal bracket till it comes out

3 people found this helpful.

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