The 2020 GMC Sierra 1500HD Classic is a robust full-size pickup truck known for its versatility and durability. As a part of the fourth generation Sierra, this model offers a standard 5.3L V8 engine with 355 horsepower and a six-speed automatic transmission. It comes with either rear-wheel drive or available four-wheel drive. The Sierra 1500HD is available in different trims including base, SLE, SLT, AT4 and Denali. Notable safety features include an available ProGrade trailering system, high definition rear view camera, and forward collision alert. Its infotainment system includes a large touchscreen, Apple CarPlay and Android Auto standard in all models. For the 2020 model year, specific Solar Ray deep-tinted glass has been added to all models, offering increased comfort and aesthetics.