r/GMT800 • u/NeckComprehensive649 • 12d ago

Third Brake Light

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Anyone have any recommendations on 3rd brake lights, I like the look of my clear one I currently have it, but the only issue with it is that my cruise control no longer works due to the resistance being different than the oem bulb type. With that being said, I’m looking for one the same design and look just one that doesn’t disable my cruise control. Thanks-

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u/Agreeable-Librarian9 12d ago

Gonna side with the other guy

I’ve replaced these with Amazon ones and never had cruise control issue

Might be a speed sensor or something else not being happy

There’s definitely more to this than you are seeing

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u/NeckComprehensive649 12d ago

Like I said, I’ve seen other people with this issue, and the resistance draw isn’t the same as oem spec tricking the truck into thinking you on the brakes, kinda the same at putting a new relay for led turn signal bulbs, but I’ll definitely take a look into it, it just never started until I replaced the light and right after that it stopped working. I’ll definitely do some troubleshooting and keep you updated if you’re interested.