2007 GMC Sierra 1500 III (GMT900) Extended Cab Long Box: Black leather seats with detailed stitching and ergonomic cabin layout

Close-up of two black leather seats featuring detailed stitching, textured upholstery, and an ergonomic interior layout including center console, door panels, and seat belts.

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

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