Troubleshooting a Tekonsha Envoy Brake Controller with No Power in a 2002 Chevy Avalanche
Updated 09/29/2014 | Published 09/28/2014
Question:
no power to anywhere in the plug. checked fuses under the hood found 15 amp fuse blown Trl Prk. replaced fuse still no power. checked power where 7 way connects via 7 way flat plug . 1 power,1 directional flashing.. checked where brake controller harness plugs in at firewall.power on red only. kept checking until battery went dead. is there a relay? or something else. was working fine back in Nov 2013.
asked by: Christopher P
Expert Reply:
Check out the picture I attached. In it you will see a large green fuse. This would be the fuse for the Tekonsha Envoy brake controller on your 2002 Chevy Avalanche.
If there is power on the red wire of your brake controller wiring that means the stoplight circuit is being activated and is functioning. If the black wire does not have power most likely the fuse I pointed out has blown.
Featured Help Information
Miscellaneous Media
Continue Researching
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Trailer Wiring Diagrams
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Article: How to Choose the Right Trailer Hitch Class
- Article: Brake Controller Installation: Starting from Scratch
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Q&A: My Vehicle has a 4-Pin Trailer Plug, but Trailer has 7-Pin Trailer Plug
- Article: How to Measure for Trailer Hitch Drop
- Q&A: 2025 Kia Sportage PHEV
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Q&A: Availability of Victron DC/DC Battery Charger With Lithium Compatibility and Engine On Detection
- Q&A: What is the Difference Between the Tekonsha Prodigy P2 and the P3 Brake Controllers
- Q&A: Parts Needed to Add 7-Way and 4-Way to 2023 Ford F-150