Brake lights not working on 02 gmc 3/4 hd extended cab. Tail lights, turn signals and flashers sll work. Replaced brake light switch, with no luck. Any suggestions to try?

Brake lights not working on 02 gmc 3/4 hd extended cab. Tail lights, turn signals and flashers sll work. Replaced brake light switch, with no luck. Any suggestions to try? 1 Answer

I have a 2003 GMC Sierra 2500hd. My fuel pump will not turn on, I have replaced it, tested it and the pump works. I have power to the harness and the fuses and relays are good. Pump will not turn on. 2 Answers

I checked the grounds and voltage they both seem good. I also swapped relays and they are good. I'm stumped.

my high mark lights don't turn on 5 Answers

I have replaced all 6 lights, 2 were burnt out in the middle portion and they still won't turn on

2003 2500 HD GMC Sierra will only run at 1500 rpm or higher, no idle. Not throwing any codes. 1 Answer

2003 2500 HD GMC Sierra will only run at 1500 rpm or higher, no idle. Not throwing any codes. Cleaned throttle body & replaced, same issue. Checked fuel pressure, all good. Does smell heavy of gas a...

2004 GMC Sierra 2500 ex cab - battery runs down if not driven 2-3 days..have new battery..has been in shop they couldn't find a problem.I pointed out the little blinking radio light stays on when the truck is turned off.Was told that didn't matter...how can I turn it off and check myself? 4 Answers

Please help with this problem