New 2021 GMC Sierra IV in black blends rugged capability with practical daily usability in a single-cab pickup. Under the hood, a 2.7-liter turbo petrol engine delivers 310 hp, mated to an automatic transmission and all-wheel drive for steady performance across conditions. GCC-spec ensures regional compatibility, while the compact cab design prioritizes payload practicality and straightforward use. Inside, the cabin focuses on clear controls and comfortable seating to support longer workdays, with durable materials that stand up to demanding use. The exterior balances a rob