2007 GMC Sierra 1500 Cont. ED

GMC Sierra 1500 adds an Extended Cab short bed version with Vortec 5300 V8 engine and available 20-inch wheels. The VortecMAX Performance Package offers enhanced towing capability for Extended Cab and Crew Cab versions and includes a 345-horsepower high-output Vortec 6000, 9.5-inch rear axle and 17-inch wheels. The Sierra Performance Edition for 2WD Extended Cab includes the 345-horsepower VortecMAX high-output Vortec 6000 V8, high-performance suspension, HD automatic transmission, HD trailering equipment, HD oil cooler, automatic locking differential, engine oil cooling system, traction control and 20-inch wheels