See also:

Horn
Press on the steering wheel pad to sound the horn. ...

What to Add
If the vehicle has DOT 3 brake fluid, as indicated on the reservoir cap, use only new DOT 3 brake fluid from a sealed container. See Recommended Fluids and Lubricants . If the vehicle has DOT 4 b ...

Connections
OnStar Hands-Free Calling allows calls to be made and received from the vehicle. The vehicle can also be controlled from a cell phone through the OnStar mobile app. See www.onstar.com for co ...