Today on our 2016 GMC Sierra 1500, we're going to be installing Draw-Tite's I-Command Trailer Brake Controller, and with this we'll be using the plug-in wiring adapter. This is an entry-level, proportional trailer brake controller, and what that means is that there's an inertia sensor inside so when you hit your brakes in the vehicle, that inertia sensor's going to detect the vehicle stopping and… see more >