Vehicle crash and safety data is provided by NHTSA, the National Highway Traffic Safety Administration. NHTSA testing was established by Congress to reduce highway deaths and injuries.
The 2021 GMC Sierra 1500 is a popular, full-size pickup truck that shares its platform with the Chevrolet Silverado 1500. It competes with the Ford F-150, RAM 1500, and Toyota Tundra. The Sierra 1500 comes in a regular-cab, double-cab, and crew-cab body styles. Cargo-box lengths range from 5 feet 8 inches to 8 feet.
Six trims are available: Base, SLE, Elevation, SLT, AT4, and Denali.