GMC Logo2007 GMC Sierra 1500 III (GMT900) Extended Cab Long Box: Extended cab long box pickup truck with double doors and cargo bed.

Extended cab long box pickup truck with double doors and cargo bed.

Side profile of an extended cab long box pickup truck highlights the four-door cabin and the elongated cargo bed, featuring silver alloy wheels and a neutral exterior color.

View Dimensions of the 2007 GMC Sierra 1500 III (GMT900) Extended Cab Long Box

View 24 images of the 2007 GMC Sierra 1500 III (GMT900) Extended Cab Long Box

Small red car