Under the Hood

195-horsepower, 4.3-liter V-6 with iron block and cylinder heads, cam-in-block, two valves per cylinder and 260 pounds-feet of torque
302-hp, 4.8-liter V-8 with iron block and aluminum cylinder heads, cam-in-block, two valves per cylinder and 305 pounds-feet of torque
Flex-fuel 315-hp (gas) or 326-hp (E85), 5.3-liter V-8 with iron block and aluminum cylinder heads, cam-in-block, two valves per cylinder and 338 pounds-feet of torque (gas) or 350 pounds-feet of torque (E85)
Flex-fuel 315-hp (gas) or 326-hp (E85), 5.3-liter V-8 with aluminum block and cylinder heads, cam-in-block, two valves per cylinder and 338 pounds-feet of torque (gas) or 350 pounds-feet of torque (E85)
Flex-fuel 403-hp, 6.2-liter V-8 with aluminum block/cylinder heads, cam-in-block and two valves per cylinder that makes 417 pounds-feet of torque
Four-speed automatic
Six-speed automatic

    See also:

    Connections
    OnStar Hands-Free Calling allows calls to be made and received from the vehicle. The vehicle can also be controlled from a cell phone through the OnStar mobile app. See www.onstar.com for coverage map ...

    Owner Checks and Services
    At Each Fuel Stop ○ Check the engine oil level. See Engine Oil on page 10‑10. Once a Month ○ Check the tire inflation pressures. See Tire Pressure on page 10‑51. ○ In ...

    Safety Locks
    The vehicle has rear door security locks to prevent passengers from opening the rear doors from the inside. Open the rear doors to access the security locks on the inside edge of each door. To set ...