2007 GMC Sierra 3500HD III (GMT900) Crew Cab Long Box: V8 engine bay with alternator, fluid reservoir, and multiple hose connections

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Close-up view inside an engine bay showing a V8 engine with an alternator, multifaceted hose and wire connections, and a fluid reservoir, highlighting the complexity of a heavy-duty pickup truck's powertrain.

View Dimensions of the 2007 GMC Sierra 3500HD III (GMT900) Crew Cab Long Box

View 30 images of the 2007 GMC Sierra 3500HD III (GMT900) Crew Cab Long Box