Chevrolets C/K pickups are available in three sizes, or duty ranges: 1500, 2500 and 3500. Regular cabs and extended cabs are available in all three ranges, but the four-door crew cab is offered only in the 3500 size. Extended cab trucks can be ordered with a third door, which opens on the passenger side and allows easier access to the rear seat. There are two cargo bed lengths, 6.5 and 8.0 feet. The shorter length is available in Chevys stylish Sportside body with a narrower bed flanked by protruding fenders and steps. Three trim levels are available: bare bones W/T (for Work Truck), Cheyenne and Silverado. (GMCs are SL, SLE and SLT.) Four-wheel drive is available for all models.