New for 2011

The Sierra Hybrid gets GM's OnStar 9.0 telematics system that GM says provides better voice recognition. GM also said they have worked to cut down on the amount of wind noise occupants hear.

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    Used Replacement Wheels
    WARNING Replacing a wheel with a used one is dangerous. How it has been used or how far it has been driven may be unknown. It could fail suddenly and cause a crash. When replacing wheels, use a n ...

    Starting the Vehicle
    1. Press and release on the Remote Keyless Entry transmitter. 2. Press and hold for about two seconds. The turn signal lamps will briefly flash to confirm the vehicle has been started. The pa ...

    When to Inspect the Engine Air Cleaner/Filter
    Inspect or replace the air cleaner/ filter at the scheduled maintenance intervals. See Maintenance Schedule on page 11‑3 for more information. If driving in dusty/dirty conditions, inspect t ...