How Does P2 Brake Controller Install in 2009 GMC Sierra 1500
Updated 10/30/2025 | Published 02/09/2025
Question:
Have a 2009 GMC Sierra 1500. Was looking at the Tekonsha P2 brake controller. What all do I need for my truck to make it work? It has factory tow system installed
asked by: Devin W
Expert Reply:
Hey Devin, the Prodigy P2 brake controller part # 90885 is a great controller and it comes with everything needed to install in your 2009 GMC Sierra 1500. Basically your truck has brake controller wires already present under the dash that you would need to run this controllers wiring straight to. Once you do that and make a couple connections under the hood of your truck the controller will be active and ready to use. I attached a help article on this for you to check out as well.
Product Page this Question was Asked From
Tekonsha Prodigy P2 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
- LED Display
- Single Trailer Only
- Tekonsha
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Tekonsha Prodigy P2 Trailer Brake Controller - 1 to 4 Axles - Proportional
- Shop: Brake Controller
- Shop: Trailer Wiring
- Q&A: Installing a Brake Controller in a 2009 GMC Sierra 1500
- Q&A: What is the Difference Between the Tekonsha Prodigy P2 and the P3 Brake Controllers
- 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)
- Article: Brake Controller Installation: Starting from Scratch
- Article: Trailer Wiring Diagrams
- Q&A: Brake Controller Recommendation for a Truck with Air Brakes and a Trailer with Electric Brakes
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Q&A: Does the Curt Base Plate Kit Work w/ the Ford Modular Bumper on a 2025 Ford Bronco Everglade?
- Q&A: Towing a Trailer with Electric Brakes with a Semi Tractor with Air Brakes
- Q&A: Brake Controller Wiring for Ford E-450 Motorhome
- Article: Installing an Electric Brake Controller on 2007-2013 GM Full-Size Truck or 2007-Present GM SUV
- Article: How to Measure for Trailer Hitch Drop
Jameson C.
10/30/2025
Hey Devin, how did things go getting the Tekonsha P2 brake controller connected on your Sierra? Did the wiring under the dash and the under-hood connections go smoothly? Your update could make it easier for the next person setting up the same controller.