1999 Tahoe brake lights staying on - SOLVED

[Grimace]

Hey gang,

I have a 99 Tahoe that the brake lights are staying on all the time and I have no hazzards. I figured the hazzards aren't working because the lights are engaged and more than likely, the brake switch needs to be replaced. My question is in viewing the videos out there to replace said switch, I don't see a cross member part like my rig has to be able to access the switch. Also, when I step on the pedal, I have some lights that flicker on my 4 wheel drive selections switches as well as a couple dash gauges that flash and activate. Would this be something more than the brake switch needing to be replaced?

 

[Grimace]

Photo of bracket blocking brake switch. I've tried to remove the 2 nuts as well as the 2 bolts on the back sides of the bracket and it doesn't budge. I'm at a loss as to how I need to proceed from here.

 

[Fless]

Moved you here from General Discussion.

 

[Joseph Garcia]

@OR VietVet may be able to provide some perspective on your issue.

 

[OR VietVet]

So, the access to the switch is blocked? If I personally run in to something I have not done before or can't see how to work around problem, I come here or look at a few you tube videos. I say "a few" because some are worthless.
The faulty switch can cause multiple lights and warnings. I wish you would post a pic of the mounted switch. Also, check your fuse(s).

 

[Grimace]

Thanks for replying. I have checked all fuses and relays and they all seem fine. I'll get a pic of the switch, but it's right underneath the left side of that bracket I can't remove. I've done extensive video and other searches for this and can't seem to find anything about it. I was all ready to swap out the switch, but can't figure out this piece of the puzzle.

 

[Grimace]

So, the access to the switch is blocked? If I personally run in to something I have not done before or can't see how to work around problem, I come here or look at a few you tube videos. I say "a few" because some are worthless.
The faulty switch can cause multiple lights and warnings. I wish you would post a pic of the mounted switch. Also, check your fuse(s).

Please see post I made instead of replying to you directly. Sorry about that.

 

[OR VietVet]

Let me do some research and get back to you. Or someone else will beat me to it.

 

[exp500]

First test before removing brake switch is feeling the installation for wobble. I've seen some 94/95's with wear in nearly everything and no plastic bushings to replace. The temp fix was to tighten the available play with big HD ty-raps. Suggest looking at parts breakdown via vin number as that will also give switch part number or bushings if installed.
Another help is beeping voltmeter on brake light so you can tell off/on while wiggling.

 

[OR VietVet]

 

[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]

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[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.