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:

    With Airbag Off Switch
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    Hydraulic Power Steering (3.0L V6 Engine)
    If power steering assist is lost due to a system malfunction, the vehicle can be steered, but may require increased effort. ...

    Vehicle Security
    This vehicle has theft-deterrent features; however, they do not make it impossible to steal. ...