why are my brake lights not working?

Asked by Guru9NYSKY Jan 19, 2022 at 03:21 PM about the GMC Sierra

Question type: Maintenance & Repair

i have left rear turn signal but no brake light no signal or brake light on rt rear at
all.

2 Answers

38,925

you need a multi tester to see if the brake light switch is getting power or even works , or look for any obvious wiring problems under the vehicle , or start at the bulbs and check for power and grounds , could be the sockets , What year truck ?

10

Check for wrong bulb in the back. 1156 in for 1157 you'll get left turn right one will blink check that

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