Troubleshooting Trailer Wiring of 2003 Chevy Tahoe Not Functioning
Updated 03/04/2019 | Published 03/03/2019
Question:
have a 03 tahoe and the only thing that works on my trailer plug is the left rear turn signal and brake light ! im getting no power to any of the other light blades ! i removed the trailer plug from the harness and checked for corrosion and it was pretty clean ! checked all trailer related fuses all were good even the 40 amp in the under the hood fuse box was in place and good
asked by: Steven M
Expert Reply:
There is most likely damage to the harness further up the vehicle. I'd trace the wiring forward to see if there's anything that damaged it. You checked the "ends" of the wiring where the problems normally are (fuses and corrosion), if the problem isn't there it has to be on the wiring between the two. I attached a couple help articles on trailer wiring 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
- Vehicle End Connector
- No Converter
- No Tow Package
- 4 Flat
- 7 Blade
- Plug Only
- Pollak
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Q&A: Recommended U-Bolts for Bracket Replacement on Boat Trailer With 3x3 Frame
- Video: Comprehensive Review: CE Smith U-Bolts
- Video: Breaking Down the CE Smith Bolster and Swivel Bracket Assemblies
- Shop: CE Smith Bolster and Swivel Bracket Assembly - Galvanized Steel - 11" - Qty 1
- Shop: CE Smith U-Bolts - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 2
- Shop: CE Smith U-Bolts - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 8
- Shop: CE Smith Bolster and Swivel Bracket Assemblies - Galvanized Steel - 13" - Qty 4
- Shop: CE Smith Bolster and Swivel Bracket Assemblies for Roller Bunks - Galvanized Steel - Qty 4
- Shop: CE Smith U-Bolts - Galvanized - 3-13/16" Long x 3-1/16" Wide x 1/2" Diameter - Qty 4
- Article: Wiring Trailer Lights with a 5-Way Plug (It's Easier Than You Think)
- Shop: Trailer Wiring
- Shop: CE Smith Bolster and Swivel Bracket Assemblies - Galvanized Steel - 11" - Qty 4
- Q&A: What Length Wiring Harness Is Needed For a Boat Trailer Measuring 22-1/2' From Tail Light To Tongue?
- Video: Let’s Check Out the Dexter DX7.5L A-60 Brake Actuator w Electric Lockout
- Video: Detailed Breakdown of the 40 Ft 5-Way Trailer Wiring Harness
- Search Results: trailer hitch
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Search Results: trailer wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer tires and wheels
- Video: How to Choose a Trailer Brake Controller
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Shop: Suspension Enhancement
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: How to Measure for Trailer Hitch Drop
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
on Custom Fit Vehicle Wiring
