rr brake & turn signal dont work

Guest

Re: rr brake & turn signal dont work

Unread post by Guest » Tue Oct 26, 2021 7:01 pm

On my 2017 express 3500. It bcm-6, which is fuse location 72.

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carriedi
Posts: 2478
Joined: Wed Apr 10, 2013 12:42 pm
Location: Oregon

Re: rr brake & turn signal dont work

Unread post by carriedi » Wed Oct 27, 2021 3:06 am

this should be what the underhood fuse box should be like
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2017 express fuse box-underhood.jpg

Freddie

Re: rr brake & turn signal dont work

Unread post by Freddie » Sun Nov 21, 2021 9:57 am

None of my rear lights work ( brake, tail , signals, and reverse lights ) I checked all fuses and there fine . Where do I go from here?

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carriedi
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Joined: Wed Apr 10, 2013 12:42 pm
Location: Oregon

Re: rr brake & turn signal dont work

Unread post by carriedi » Sun Nov 21, 2021 2:56 pm

If none of the rear lights work (brake, turn and reverse) and all the fuses are good, I would look at the wire harness connection. there should be a connector the goes to all the rear lights in the wire harness. See if it has been cut or unplugged.

Travis

Re: driver tail light out and no trailer running lights

Unread post by Travis » Wed Dec 29, 2021 8:31 pm

So some guys hooked a trailer up to my Chevy 2500 express 2016 model. Since then my driver tail light doesn’t work nor does my trailer running lights. All fuse are good, even took to another shop today and they said they couldn’t figure it out. Any suggestions would be great.

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carriedi
Posts: 2478
Joined: Wed Apr 10, 2013 12:42 pm
Location: Oregon

Re: rr brake & turn signal dont work

Unread post by carriedi » Sun Jan 02, 2022 5:08 am

the tail light fuses are under the drivers seat. LT REAR PARK LAMP FUSE. RT REAR PRK LAMP FUSE. Thay both get power to the fuses from the park lamps relay. If you have power on both fuses but one tail light doesn't come on you have a bad connection the the light that is out or you have a bad/wrong bulb in the tail light. Is the license plate light working? Brown wire is for tail lights. Both sides and license.

I would completely remove the trailer wiring first and then see how everything works. Probably could be a bad wiring job.

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