The 2019 GMC Sierra 1500HD Classic is a part of the vehicle's fourth generation. As a full-size pickup truck, it offers a potent 6.2 L V8 engine with 420 horsepower as one of the top engine options. This comes coupled to a 10-speed automatic transmission, providing both RWD and 4WD options. The Sierra 1500HD Classic appears in several available trims, each aimed at different types of customers from workman to the luxury-focused. The top-tier Denali trim offers advanced luxury touches including genuine wood trim and active noise canceling. The truck incorporates several key safety features like forward-collision warning, lane-keeping assist, and low-speed forward automatic braking. Tech features include a 7- or 8-inch infotainment system, Apple CarPlay and Android Auto compatibility, and an optional Wi-Fi hotspot. For 2019, the Sierra 1500 saw a complete redesign, offering a more upscale interior and the addition of an AT4 off-road variant.