2011 GMC Sierra 3500HD III (GMT900, facelift 2011) Regular Cab Long Box: Side profile of a heavy duty pickup with regular cab and long box.

Side view of a heavy duty pickup truck showcasing a single-door regular cab and an extended cargo bed (long box), equipped with 4x4 drivetrain and rugged wheels.

View Dimensions of the 2011 GMC Sierra 3500HD III (GMT900, facelift 2011) Regular Cab Long Box

View 18 images of the 2011 GMC Sierra 3500HD III (GMT900, facelift 2011) Regular Cab Long Box

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