By Katie Weiler | September 28, 2010

Chevrolet/GMC pickup truckSignificant improvements to the 2003 Silverado and Sierra pickups include a passenger-sensing air bag, advanced electrical system, modified instrument panel and new center console. There is also expanded availability of the Quadrasteer four-wheel steering system. The trucks have redesigned exteriors and also feature the first industry application of a Bose audio system in a full-size pickup. A range of Vortec engines is offered and two Duramax diesels with up to 340 horsepower.