Does Installing Brake Controller in 2025 Chevy Silverado 1500 Require Running Wire to Rear of Truck
Products Featured in This Question
Question:
I have a Tekonsha P3 brake control unit that was on my 2021 Chevy Silverado 1500. I recently got a new 2025 Chevy Silverado 1500 and am transferring it to that truck. I am using the harness that connects under the steering column to the unit. On my old unit I had to wire the blue wire from the unit all the way to the 7 pin connector. Anyways I plugged in the unit on the new truck and have no power to the controller. I am wondering what fuse that connector is? Wanted to check that first. Secondly I was told I do not have to run the blue wire to the 7 pin on the new truck. Is that correct as well? Thanks for the help.
asked by: Patrick
Expert Reply:
Hey Patrick, when installing a Prodigy brake controller in your 2025 Chevy Silverado 1500 using the install harness part # 3064-P you would only need to run a separate wire to the 7-way if you were replacing an integrated brake controller that Chevy had installed in it from the factory.
I had a hard time pulling up a fuse box diagram for your truck but I believe it's position 20 in the fuse box.

Product Page this Question was Asked From
Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Splice-In
- Under-Dash Box
- Under-Dash
- Up to 4 Axles
- LCD Display
- Multiple Trailers
- Tekonsha
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Brake Controller
- Search Results: lube plates
- Article: Aftermarket Brake Control Wiring for 07-13 GM Full-Size Truck with Factory-Integrated Brake Control
- Shop: 7-Way Vehicle Power Adapter for Furrion RV Observation Camera
- Search Results: go power rv solar panels
- Shop: Go Power Overlander Solar Charging System with Digital Solar Controller - 200 Watt Solar Panel
- Q&A: How to Disable OEM Brake Controller When Installing Aftermarket Controller
- Q&A: Can Aftermarket Brake Controller Install in 2023 Chevy Silverado 1500
- Shop: Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Weight And Dimensions For Demco Autoslide 18K 5th Wheel Hitch DM79GV
- Shop: Trailer Hitch
- Search Results: trailer tires and wheels
- Video: How to Choose a Trailer Brake Controller
- Q&A: Can Demco Hijacker Autoslide Fifth Wheel Hitch be Ordered without the Side Plates
- Shop: Curt Echo Wireless Brake Controller - 7-Way Plug-in w/ Bluetooth App - Up to 2 Axles - Proportional
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Search Results: trailer hitch
- Shop: Trailer Wiring
- Q&A: What Is An OEM Prep Package And How Do I Know If I Have It
- Search Results: trailer wiring
- Video: Review of Demco Autoslide Locking Plate Lippert Helux Pin Box - DM53KV
- Shop: Suspension Enhancement
- Shop: B&W Companion OEM 5th Wheel Hitch for Chevy/GMC Towing Prep Package - Dual Jaw - 25,000 lbs
- Article: Trailer Wiring Diagrams
- Search Results: brake controller
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
- Shop: Kenda Karrier KR53 ST205/75R15 Radial Trailer Tire with 15" Black Mod Wheel - 5 on 5
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Video: Finding the Right Trailer Wiring Harness
Patrick
3/26/2025
Actually I’ve done a lot of digging since asking this question. Even though the adapter 3064-p fits perfectly, the unit will not power. Tekonsha said they haven’t tested the 2025 and that it may not be compatible. Also fuse 20 is the iecr (in engine control relay) nothing to do with brake controller. The response I got from GM is that the adapter plug isn’t powered and needs to have a kit to power that plug… so no more plug and play. I tested with a multimeter on the black wire to see if we had power and there was nothing. I’m pretty much stuck as of now….