New for 2010

GM has dropped the long-running 6.0-liter V-8 engine from the Sierra lineup, leaving the powerful 6.2-liter V-8 for heavy towing needs. The rest of the Sierra's eight-cylinder lineup benefits from increased availability of its new six-speed transmission for regular and extended cab models equipped with the 5.3-liter V-8. Also, the 4.8-liter and 5.3-liter V-8 engines have been enhanced, with variable valve timing for improved emissions and better fuel economy.

Those with portable MP3 players can connect and play their music collections with the truck's audio system through a USB connection. Standard side curtain and side-impact airbags are welcome safety additions.

    See also:

    Checking the Fluid Level
    Prepare the vehicle as follows: 1. Park the vehicle on a level place. Keep the engine running. 2. With the parking brake applied, place the shift lever in P (Park). 3. With your foot on the brake p ...

    Pulling a Trailer
    Here are some important points: ○ There are many laws, including speed limit restrictions that apply to trailering. Check for legal requirements with state or provincial police. ○ Do n ...

    Power Outlet 120 Volt Alternating Current
    The vehicle may have a power outlet that can be used to plug in electrical equipment that uses a maximum limit of 150 watts. The power outlet is located on the rear of the center console. An indic ...