GMC Logo2007 GMC Sierra 1500 III (GMT900) Extended Cab Standard Box in Summit White: Front and side view of a pickup with extended cab and standard bed

Front and side view of a pickup with extended cab and standard bed

A pickup truck with extended cab and standard box displayed from front and side angles, highlighting the mesh grille, headlights, and alloy wheels.

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

View 25 images of the 2007 GMC Sierra 1500 III (GMT900) Extended Cab Standard Box

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Small red car