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2014 GMC Sierra third brake light not working

Tyler Neal
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Tyler Neal New Member

Tyler Neal

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So far I have replaced the bulb, checked the fuse, replaced the brake light switch, put a meter on the light socket (no voltage) and a meter on the fuse block (no voltage). I am honestly out of options and didn't know if anyone else had been in the same boat

JimCost2014 Senior Enthusiast

JimCost2014

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18 hours ago, Tyler Neal said:

So far I have replaced the bulb, checked the fuse, replaced the brake light switch, put a meter on the light socket (no voltage) and a meter on the fuse block (no voltage). I am honestly out of options and didn't know if anyone else had been in the same boat

Welcome to the site.

 

You will need to replace the fuse box, 3rd brake light "relay/fuse" is not serviceable.

Tyler Neal New Member

Tyler Neal

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3 hours ago, JimCost2014 said:

Welcome to the site.

 

You will need to replace the fuse box, 3rd brake light "relay/fuse" is not serviceable.

Looking at the wiring schematics that's what I assumed but couldn't find anything online

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JimCost2014 Senior Enthusiast

JimCost2014

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3 hours ago, Tyler Neal said:

Looking at the wiring schematics that's what I assumed but couldn't find anything online

Dealer, E-Bay, or salvage yards. Just a poor design by GM, had to replace it in my 2008, around $550.00 for part and installation at that time.

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