11 GMC Sierra Tricks Most Owners Discover WAY Too Late

0:00 11 built-in features of the GMC Sierra that owners often overlook or misunderstand. 1:02 Teen Driver and the Rear Seat Reminder 2:01 The Cargo Box Light 2:54 The Tire Pressure Readout 4:06 The Bed Outlet 5:04 The Automatic Locking Rear Differential 6:09 The Auto Stop Start Disable Button 7:29 The MultiPro Tailgate 8:33 The trailer light test and the trailering app 9:34 Tow Haul Mode and Grade Braking 10:28 Trailer Brake Gain 11:35 The transmitter pocket Your GMC Sierra may already have the features you need to avoid a dead key fob, trailer trouble, worn brakes, and unnecessary purchases. I walk through 11 built-in features that many owners overlook, including the tire pressure readout, bed outlet, automatic locking rear differential, MultiPro Tailgate, trailering tools, Tow Haul mode, trailer brake gain, and the transmitter pocket. I also explain what each feature does and what I would check on the truck. As a mechanic with 25 years under the hoods of full-size trucks, I share practical checks you can do with your own Sierra, whether you are towing, shopping for a used truck, or simply trying to get more from the equipment you already paid for.