Silverado 1500 offers a full lineup of pickups to meet almost any need, including WT, LS, LT, XFE and LTZ models, as well as the unique Silverado 1500 Hybrid -- the industry's only hybrid full-size truck. Silverado 1500 models are available in three cab styles -- regular, extended and crew cab -- as well as three cargo box lengths: 5 foot 8 inches (short), 6 foot 6 inches (standard) and 8 foot (long). There are 10 2500HD models and eight single- and dual-rear-wheel 3500HD models, including regular cab, extended cab and crew cab body styles. The HD trucks are offered in WT, LT and LTZ models, in 2WD and 4WD.