GMC Logo2015 GMC Sierra 3500HD IV (GMTK2XX) Double Cab Long Box: Front view of heavy-duty truck grille and headlights

Front view of heavy-duty truck grille and headlights

Close-up front view highlighting the grille with red emblems and integrated headlights of a heavy-duty pickup truck.

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

View 22 images of the 2015 GMC Sierra 3500HD IV (GMTK2XX) Double Cab Long Box

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