Vortec 6.0L V8 SFI with Variable Valve Timing

The Vortec 6.0L V8 engine produces 332 hp and 367 lb-ft of torque. This standard engine features 2-mode advanced technology:

  • Mode 1: At low speeds and with light loads, Sierra Hybrid can operate 3 ways: electric power, engine power or in any combination of the two
  • Mode 2: Used primarily at highway speeds or when driving conditions demand, such as towing trailers and climbing steep grades; it provides an electric assist in addition to 4-cylinder or full 8-cylinder power
Sierra Hybrid can handle payloads over 1500 pounds1 and offers up to 6000 pounds of conventional trailering capacity2.

Maximum payload capacity includes weight of driver, passengers, optional equipment and cargo.
Maximum trailer weight ratings are calculated assuming a properly equipped base vehicle plus driver.