GMC Logo2007 GMC Sierra 2500HD III (GMT900) Extended Cab Long Box: Extended cab pickup truck with long cargo bed side profile.

Extended cab pickup truck with long cargo bed side profile.

White extended cab pickup truck with four doors and long cargo bed viewed from the side, emphasizing its heavy-duty build and utility features.

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

View 39 images of the 2007 GMC Sierra 2500HD III (GMT900) Extended Cab Long Box

Small red car