The Plug-In Wiring Harness#3064-P that you referenced is the correct brakecontrollerharnessfor your 2019 Chevy Silverado 1500 and it is actually a brand new product for this generation of GMtrucks (it currently only fits the 2019 model Silverado and Sierra 1500s). Installing Trailer Brake Controller on 2019 Chevy Was this helpful? Brake Control Adapter Harness for GM Models - Reese Brands Brake Control Adapter Harness for GM Models. CLICK BELOW FOR LARGER IMAGE. Part Number: 8506911. Product Description This universal harness is designed to mate with any REESE Towpower or Tekonsha brake controller. Simply wire in the harness and then plug into the controller to complete installation. This harness make it easy to move the brake Amazon: gm brake controller harness Reese Towpower 7805011 Brake Control Wiring Harness (For Chevy) 4.4 out of 5 stars 15. $17 $ 17. 22. Get it as soon as Mon, Aug 19. FREE Shipping on orders over $25 shipped by Amazon. More Buying Choices $15 (8 used & new offers) Genuine GM 19330154 Brake Control and Adapter Harness.