I have a 2006 chevy 3500 duramax and the right blinker and right brake light on the trailer won't work. I hooked it up to my other truck and it worked fine. So i know that it is the fuze. So I used a test light on it and it didn't work. So I pulled the fuze out and it didn't look blown. I put a new one in and the lights still didn't work and the test light didn't work. It seems like powers not getting to that fuze but the left works fine. Does anyone know how to fix this?
I have a 2006 chevy 3500 duramax and the right blinker and right brake light on the trailer won't work. I hooked it up to my other truck and it worked fine. So i know that it is the fuze. So I used a test light on it and it didn't work. So I pulled the fuze out and it didn't look blown. I put a new one in and the lights still didn't work and the test light didn't work. It seems like powers not getting to that fuze but the left works fine. Does anyone know how to fix this?
Check the other fuse box under the hood where your relays are.
I know where you're coming from. The first day after I bought my truck I had the same exact problem. I couldn't figure it out, so I went back to the dealer all pissed off that they sold me a lemon. Well, the salesman managed to find the fuse under the hood. I'm not sure which one it is, but your problem sounds exactly like mine. Let me know if you can't find it, and I'll try to look at mine. Good luck.
__________________ '07 Classic 2500HD ext. cab
nerf bars
delta diamond plate tool box
back rack
Edge Juice w/attitude
K&N CAI
MBRP 4" turbo back w/5" tip
Moto Metal 16 x 9 (hopefully 285's soon!)
i looked under the hood at that fuze box. I pulled just about every fuze out and couldn't find one that was blown. So if u could take a look at your that would be great.
Standing on the left side looking right, in the top left corner are 3 in a row, 15a, 10a, 10a, the left 15a being trailer running lights. Drop down from there to the next 3-in-a-row set, the middle fuse being a trailer-wiring backup.
In the instrument panel fuse block at the left doorjamb, just below center and to the left are a grouping of 4-10a fuses controlling truck and trailer stop/turn signals for left and right, with the 2 lower being truck and the ones above being trailer (tilt your head to the left for proper orientation).
Check Impedance for the fuse, not just a visual. Check power to the input blade for the fuse using a small meter probe, a test light may be too large.
Below the dash and behind the parking brake is the center panel fuse block containing the 6-way trailer relay, top row, second port from the left.
Have you done the obvious and checked for damage to the trailer plug/wire harness, maybe you ran over/snagged some debris unnoticed? The stock set-up does hang low.
__________________ 2005 Chev Duramax/Allison 3500LS DRW Crew Cab
CAI / LMM intake OH kit, Sulastic springs, Bilsteins,
B&W 30K-Turnover GN, Putnam XDR 15K, Ride-Rite Air Springs, A/T Revos.
Pulling 10 tons daily.
2006 Chev 6.0L/4L80e 3500WT DRW Ex-Cab
9 'Flat/GN, Ride-Rite Air Springs, A/T Revos.
Pulling 6 tons daily.
"The difference between liberals and cannibals, is that cannibals eat only their enemies." -Lyndon B.Johnson 100th
AutoForums.com is the premier network of enthusiast-owned
enthusiast-operated automotive communities.
We operate more than 100 automotive forums where our users consult peers for shopping information and advice, and share
experiences and opinions as a community.
trailer brake light problem 
2005 Chev Duramax/Allison 3500LS DRW Crew Cab 
2006 Chev 6.0L/4L80e 3500WT DRW Ex-Cab 
100th 
Linear Mode
