2023 GMC Sierra 3500HD 4WD Pro Double Cab. All prices include $500 Race for savings cash. CARFAX One-Owner. 2023 GMC Sierra 3500HD Pro 6.6L V8 6-Speed Automatic 4WD Double Cab Summit White 6-Speed Automatic, 4WD, Black Cloth, 2-Speed Electronic Shift Transfer Case, 220... via AutoRevolution