1999 Tahoe brake lights staying on - SOLVED

[Grimace]

Thank you so much for this! I'll get to work on it now and let you know the outcome.

 

[Joseph Garcia]

Thank you so much for this! I'll get to work on it now and let you know the outcome.

Just another reason why this Forum ROCKS!! Thank you @OR VietVet .

 

[Grimace]

Finally got the switch out and discovered 2 wires disconnected from the plug. I'm going to try and splice them together, but if that doesn't work, is there a part number out there for that piece with both plugs on each end? I've found a few with just the connector to the switch, but nothing with the plug on the other end.

 

[OR VietVet]

More Information for GM GENUINE PT3907

More Information for GM GENUINE PT392

More Information for ACDELCO PT2362

More Information for GM GENUINE PT1014

 

[Grimace]

Well...back to square 1. I replaced the 6 wire plug (the 2 green wires were disconnected from the plug), matched all the colors to the original, got everything put back into place, now I have no brake lights at all. Confirmed all fuses are still good after hooking the battery back up. I'm at a loss now. I was really hoping the 2 broken wires were going to solve the issue... back to troubleshooting I guess. Thank you all for the suggestions and videos on how to replace the switch. I don't think I could have figured that out on my own without your help.

 

[OR VietVet]

Well...back to square 1. I replaced the 6 wire plug (the 2 green wires were disconnected from the plug), matched all the colors to the original, got everything put back into place, now I have no brake lights at all. Confirmed all fuses are still good after hooking the battery back up. I'm at a loss now. I was really hoping the 2 broken wires were going to solve the issue... back to troubleshooting I guess. Thank you all for the suggestions and videos on how to replace the switch. I don't think I could have figured that out on my own without your help.

Remember, the brake light circuitry goes thru the turn signal switch, so that the turn signals work when brakes lights are lit up.

 

[Grimace]

Remember, the brake light circuitry goes thru the turn signal switch, so that the turn signals work when brakes lights are lit up.

After extensive tracing, the issue was the turn signal switch. Replaced the entire assembly and everything works again. Thank you all for your assistance in tracking down this issue! Time to replace the door hinge pins now...

 

[OR VietVet]

After extensive tracing, the issue was the turn signal switch. Replaced the entire assembly and everything works again. Thank you all for your assistance in tracking down this issue! Time to replace the door hinge pins now...

If you think that the brake light switch was a pain, research the door hinge pins.

 

[Grimace]

If you think that the brake light switch was a pain, research the door hinge pins.

I have. Not looking forward to it.

 

[Eman85]

If you think that the brake light switch was a pain, research the door hinge pins.

I'll do 2 door hinge pins over 1 brake light switch any day.