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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
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Powertrain Component Warranty Coverage