View 26 Photos View 0 Videos 2021 GMC G33903 Box Truck - 401HP, 6 Speed Automatic, Roll up Door Recently Updated $33,750 USD Used 2021 GMC G33903 Box Truck for sale, 77,884 miles, 401 HP 6.6L V8 GMC engine, 6-speed automatic transmission, single rear axle 8,600 lbs, roll-up door, white. See it now. ConditionUsedUsage80,365 MilesDuty ClassLight Duty Box TruckHorse Power401 HPEngine ModelGMC 6.6LV8Transmission6 Speed AutomaticSuspensionSpringRear AxleSingle AxleRear End8,600 lb 4.10 ratioDoor TypeRoll upStock Number91620397 MLS Number13571419CategoryDelivery / Moving / Straight / Box Trucks Last Updated2/21/2026 LocationFrederick, MD, US Sold ByPenske Used Trucks (855) 942-___ SHOWNUMBERCall Seller Email Seller Save More Info