Introduction
The 2011 GMC Sierra Heavy Duty is designed to offer best-in-class highway MPG and remarkable capability.
GMC engineers have crafted every detail to deliver the strongest, most powerful, and most capable lineup of Sierra HD pickups.
Frame and Capability
The new Sierra HD has a fully boxed frame made of high-strength alloy steel, allowing for a maximum Gross Combined Weight Rating (GCWR) of 29,200 lbs.
The frame features hydroformed front frame sections and C-channel frame rails for maximum strength and resistance to bending.
The Sierra HD offers a maximum payload capacity of up to 6,635 lbs, depending on the model.
Manual:
Download: 2011 GMC Sierra Heavy Duty Owner’s Manual
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