2011 GMC Sierra 3500HD III (GMT900, facelift 2011) Crew Cab Long Box: Front view of heavy duty pickup with grille and hood scoop

Front view of a heavy duty pickup showing a large grille with GMC badge and distinctive hood scoop, fitted with dual rectangular headlights and chrome bumper.

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

View 31 images of the 2011 GMC Sierra 3500HD III (GMT900, facelift 2011) Crew Cab Long Box

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