GMC Sierra 1500 – Features, Trims, and More
GMC made a strategic move by amplifying its off-road capabilities in the AT4X trim by making the Duramax 3.0-liter turbo diesel engine standard. The brand made changes to the engine, evident in the improved torque and horsepower. Beyond this, it made some minor improvements with active exhaust and retractable assist steps in some trims.
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