GMC Logo2020 GMC Sierra 3500HD V (GMTT1XX) Double Cab Long Bed: Engine bay showcasing Duramax 6.6L Turbo-Diesel powertrain

Engine bay showcasing Duramax 6.6L Turbo-Diesel powertrain

Close-up of a truck engine bay highlighting the Duramax 6.6L Turbo-Diesel engine and surrounding components under the hood.

View Dimensions of the 2020 GMC Sierra 3500HD V (GMTT1XX) Double Cab Long Bed

View 25 images of the 2020 GMC Sierra 3500HD V (GMTT1XX) Double Cab Long Bed

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