GMC Logo2015 GMC Sierra 3500HD IV (GMTK2XX) Crew Cab Long Box: Front view of engine bay with detailed visible components under hood.

Front view of engine bay with detailed visible components under hood.

Close-up front view showing engine bay layout and various mechanical components, hoses, reservoirs, and wiring beneath an open hood.

View Dimensions of the 2015 GMC Sierra 3500HD IV (GMTK2XX) Crew Cab Long Box

View 23 images of the 2015 GMC Sierra 3500HD IV (GMTK2XX) Crew Cab Long Box

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