GMCs version of the Chevrolet S-10 adds a Crew Cab body style and makes a 3rd door standard on its extended-cab for 2001. The Crew Cab has four front-hinged doors and a 3-passenger rear bench seat. The extended-cab has a left-side rear-hinged back door and a one-person fold-down jump seat. All models are available with a 4 cyl or V6 engine and manual or automatic transmission. Extended-cabs offer rear-wheel drive or 4WD that must be disengaged on dry pavement but includes low-range gearing. Regular cabs come only in rear-wheel drive, Crew Cabs only with 4WD. Cargo beds are 6 ft or 7.3 ft on regular cabs, 6 ft on extended cabs, and 4.6 ft on Crew Cabs. The 6-ft bed is available as a flare-fender Sportside in addition to flush-fender Wideside form. Front seating is a 3-place bench or extra-cost buckets. ABS is standard, and 4x4s get 4-wheel disc brakes. Maximum towing capacity is 6175 lb. Sonomas performance and accommodations mirror those of equivalent S-10s.