Troubleshooting GMC Truck that Left Turn Signal on 7-Way Stopped Functioning
Question:
2006 GMC 3500 dura max - boat trailer lights work except left turn , left turn on truck works but no power at 7 way for left turn power there for every thing else ???
asked by: Jack O
Expert Reply:
Since you have isolated the problem down to the left turn signal on the 7-way on your vehicle the problem is most likely a blown fuse under the hood of your 2006 GMC Sierra 3500. GM vehicles tend to blow fuses easier than the other manufacturers.
Check the fuse box under the hood of your engine on the driver side for the trailer related circuits and replace as needed.
I attached a couple help articles for you to check out as well.
Product Page this Question was Asked From
7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 7 Round - Blade
- 4 Flat
- Hopkins
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Trailer Wiring Diagrams
- Article: How to Choose the Right Trailer Hitch Class
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Article: My Trailer Hitch Doesn't Fit
- Article: Brake Controller Installation: Starting from Scratch
- Article: How to Measure for Trailer Hitch Drop
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Q&A: Availability Of Hub/Drum Kit With Brakes And Hardware Similar To Part BPH1206EPR
- Q&A: Parts Needed To Add a Tow Package To a 2024 GMC Canyon
- Q&A: Gooseneck Trailer Hitch for a 1996 Ford F-450
- Q&A: How Does the Hopkins 7-Way part # HM40975 Wire to a Vehicle
- Q&A: Recommended Blue Ox Flat Towing Components For A 2020 Jeep Grand Cherokee Trailhawk
Jack K.
7/29/2020
Unique problem, when left turn is on [2007 GMC Sierra Crew] right turn is faintly on at trailer. [LEDS on Trailer] Changed 7 pin and junction piece on frame near hitch. Does the same on another trailer with LEDS. When left turn is on measured 4-6 volts at right turn side of 7 pin.