Front side airbags are optional instead of standard for 2003, and Avalanche is now available without bodyside cladding. This SUV/pickup crossover is based on Chevrolet's full-size Suburban wagon. It has four full-size side doors and a "midgate" separating cab from cargo bed. Lowering the midgate and rear seat extends the 5.3-ft cargo box to 8.1 ft. The rear window also removes and stores onboard. Avalanche comes as a half-ton 1500 model with a 5.3-liter V8 and as a heavy-duty 2500 with an 8.1-liter V8. Each offers rear-wheel drive with optional traction control or GM's Autotrac 4WD that can be left engaged on dry pavement and includes low-range gearing. All models have automatic transmission, antilock 4-wheel disc brakes, and standard seating for six. Options include heated front bucket seats, leather upholstery, and a sunroof. For 2003, Avalanche gets a redesigned dashboard and an optional rear-seat DVD-video entertainment system. Front side airbags are now part of an $875 Personal Security option that also includes OnStar assistance. A $600 credit option for 1500 models, the new "Without Body Hardware" package deletes the plastic cladding on the lower body and wheel flares. Among other new options are power-adjustable brake and accelerator pedals and XM satellite radio. On 1500s, a Z71 Off-Road suspension is available with 4WD; with 2WD, a Z66 on-road package brings traction control and a sport suspension with rear self-leveling. Cadillac's Escalade EXT is a luxury Avalanche with different styling, more power, and standard all-wheel drive.