2000 Sonoma left brake light not working. The turn signal works fine. Funny thing is when I turn on the right turn signal then the left brake light works. Any ideas
sounds like you have a socket that is shorting out. This could also be caused by installing the wrong bulb.Switch the bulbs from side to side. If it does the exact oppostite just replace the bulbs with known correct. If it does the same, look further into shorts in the socket. Good luck
Search GMC Sonoma Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
GMC Sonoma Experts