GMC Logo2011 GMC Sierra 2500HD III (GMT900, facelift 2011) Extended Cab Standard Box: Engine compartment close-up with hoses, reservoir tanks, and mechanical details

Engine compartment close-up with hoses, reservoir tanks, and mechanical details

Detailed under-the-hood view showing engine components, fluid reservoirs, wiring, and hoses inside the engine bay with an open hood.

View Dimensions of the 2011 GMC Sierra 2500HD III (GMT900, facelift 2011) Extended Cab Standard Box

View 19 images of the 2011 GMC Sierra 2500HD III (GMT900, facelift 2011) Extended Cab Standard Box

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