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- Engine bay showcasing Duramax 6.6L Turbo-Diesel powertrain
GMC2020 GMC Sierra 3500HD V (GMTT1XX) Double Cab Long Bed: Engine bay showcasing Duramax 6.6L Turbo-Diesel powertrainClose-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
