See also:

Transferring Service
Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has chan ...

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

Trunk Release
To open the trunk, press the touchpad (A) under the vehicle emblem. To close the trunk, use the pull cup (A) as an aid. ...