Trailer Turn Signals and Brake Lights Not Working with 2011 GMC Sierra
Question:
Hello- I recently purchased a 2011 sierra with the factory tow package. When a trailer is plugged in I only get running lights- no brake or signal lights. I am not sure if this is new or just happened. Is there a fuse that services both of these circuits?
asked by: Tony P
Expert Reply:
Chances are the problem you're having is caused by blown fuses. There are actually two fuses that service these lights. Your truck will have a fuse for the left turn signal and left brake light and another fuse for the right turn signal and right brake light.
According to the owner's manual of your 2011 GMC Sierra the fuses are fuses 1 and 3 in your engine compartment fuse box. Replacing these will likely solve your issue.
However, being that your truck isn't that old it's more than likely that something caused the blown fuses in the first place. Of course this could have happened before you purchased it but there's no way to know that. If replacing the fuses gets your lights working you will want to inspect the wiring of the trailer to make sure there are no pinches or any other kind of damage such as a short that could cause the fuses to blow. You should also check for corrosion in your trailer connector and clean it if you find any.
Product Page this Question was Asked From
Demco 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug - 10' Long
- Custom Fit Vehicle Wiring
- Fifth Wheel and Gooseneck Wiring
- Vehicle End Connector
- No Tow Package
- 7 Round - Blade
- Plug and Lead
- Plug-In
- Demco
more information >
Continue Researching
- Shop: Optronics Fleet LED Trailer Tail Lights w/ Grommets - Stop,Turn,Tail - Submersible - Oval - Qty 2
- Shop: Trailer Hitch
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Shop: etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2"
- Shop: etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2"
- Shop: Trailer Wiring
- Shop: Demco 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug - 10' Long
- Video: Demco 5th Wheel/Gooseneck Wiring Harness Installation - 2012 Chevrolet Silverado
- Q&A: Replacement Red Oval LED Stop/Turn/Tail Lights for Skeeter Bassboat Trailer
- Q&A: Trailer Lights Left Side Turn Signal and Brake Lights Not Working
- Q&A: Fuse Location for Factory Integrated Brake Controller on a 2011 GMC Sierra
- Search Results: 7 way circuit tester
- Shop: etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2"
- Search Results: trailer hitch
- Video: Finding the Right Trailer Wiring Harness
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: Trailer Wiring Diagrams
- Search Results: trailer wiring
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Brake Controller
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: Difference Between Curt and etrailer Trailer Hitch Receivers for 2020 Chevy Colorado
- Search Results: trailer hitch ball mount
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
- Article: How to Choose the Right Trailer Hitch Class
- Shop: Suspension Enhancement
- Q&A: What Is An OEM Prep Package And How Do I Know If I Have It
- Video: Curt T-Connector Vehicle Wiring Harness Review C56040
- Search Results: trailer lights
on Custom Fit Vehicle Wiring
