Need location of fuse for third brake light

[dwillard06]

I own a 2018 Tahoe Premier with the 6.2L RST package. I cracked my third brake light and water got in and shorted it out. I replaced the light fixture and the wire/wiper fluid tube harness but it still isn’t working. Is there a fuse for the third brake light? I couldn’t find it in the owners manual. Any help is very much appreciated.

 

[dwillard06]

Bump. Anyone have any insight on this?

 

[Doubeleive]

Bump. Anyone have any insight on this?

if it is not shown in the owners manual then the gm upfitter guide usually shows what other things are attached to certain fuses.
it's probably not something that a lot of people are going to have committed to memory.
if you can't find it in the upfitter guide then go old school and start testing fuses easy to do by just touching the outer contacts with meter probes.

 

[gooffeyguy]

It will be listed as CHMSL
(Center High Mount Stop Lamp)

 

[dwillard06]

Thank you for the information! I’ll look into the up fitters guide.

 

[jguard83]

Did you ever figure it out? I cant figure out why my replacement CHMSL isn't working and can't find where the fuse is.

 

[Fless]

Did you ever figure it out? I cant figure out why my replacement CHMSL isn't working and can't find where the fuse is.

What are you working on? Helps to tell us year, make, and model. Don't hold back...

 

[OR VietVet]

What are you working on? Helps to tell us year, make, and model. Don't hold back...

@Fless, don't you know by now that each and every single 2015-2020 and every other Tahoe/Yukon/Escalade, no matter what year, is exactly the same except for the name.