Horn

Press near or on the horn symbols on the steering wheel pad to sound the horn.

    See also:

    Interior Mirrors
    Adjustment Hold the rearview mirror in the center and move it to view the area behind the vehicle. Manual Rearview Mirror For vehicles with a manual rearview mirror, push the tab forward for dayt ...

    Maintenance Replacement Parts
    Replacement parts identified below by name, part number, or specification can be obtained from your dealer/retailer. Maintenance Replacement Parts ...

    Diagnostics
    OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...