Horn

To sound the horn, press the center pad on the steering wheel.

    See also:

    Following Distance
    Stay at least twice as far behind the vehicle ahead as you would when driving the vehicle without a trailer. This can help to avoid situations that require heavy braking and sudden turns. ...

    How to Reinstall Engine Air Cleaner/Filter
    1. Install the air cleaner filter into the air cleaner housing. The outer air cleaner filter seal must be fitted properly in the air cleaner housing. 2. Align the air cleaner housing cover tabs to ...

    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 vehic ...