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Standard 4.3L V6 with 8-speed automatic transmission: 276 hp, 298 lb.-ft. of torque
Available Vortec 6.0L V8 VVT: 341 hp, 373 lb.-ft. of torque
Available 6.0L V8 SFI Gaseous CNG/LPG capable engine: 341 hp, 373 lb-ft of torque
Backed by a 5-year/60,000-mile transferrable powertrain limited warranty
1. Whichever comes first. See dealer for limited warranty details.