GMC Logo2007 GMC Sierra 2500HD III (GMT900) Extended Cab Standard Box: Front view of extended cab pickup with distinctive grille and headlights

Front view of extended cab pickup with distinctive grille and headlights

Front view of extended cab pickup truck showing prominent grille, rectangular headlights, wide side mirrors, and chrome bumper with fog lights.

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

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

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