GMC Logo2007 GMC Sierra 2500HD III (GMT900) Regular Cab Long Box: Side profile of regular cab pickup with extended long bed

Side profile of a heavy-duty pickup truck displaying a regular cab and an extended long cargo bed with rugged wheels and Z71 off-road package logo on the rear quarter panel.

View Dimensions of the 2007 GMC Sierra 2500HD III (GMT900) Regular Cab Long Box

View 38 images of the 2007 GMC Sierra 2500HD III (GMT900) Regular Cab Long Box

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Small red car