Base Cab & Chassis 2-Door 18 Base Cab & Chassis 4-Door 18 Base Crew Cab Pickup 4-Door 18 Base Extended Cab Pickup 2-Door 18 Base Standard Cab Pickup 2-Door 18 High Sierra Cab & Chassis 2-Door 18 High Sierra Cab & Chassis 4-Door 18 High Sierra Crew Cab Pickup 4-Door 18 High Sierra Extended Cab Pickup 2-Door 18 High Sierra Standard Cab Pickup 2-Door 18 Sierra Classic Cab & Chassis 2-Door 18 Sierra Classic Cab & Chassis 4-Door 18 Sierra Classic Crew Cab Pickup 4-Door 18 Sierra Classic Extended Cab Pickup 2-Door 18 Sierra Classic Standard Cab Pickup 2-Door 18 Sierra Grande Cab & Chassis 2-Door 18 Sierra Grande Cab & Chassis 4-Door 18 Sierra Grande Crew Cab Pickup 4-Door 18 Sierra Grande Extended Cab Pickup 2-Door 18 Sierra Grande Standard Cab Pickup 2-Door 18