End a Call
Push 
. System responds: “Call
ended.”
See also:
At Least Once a Month
Tire Inflation Check
Visually inspect your vehicle’s tires and make
sure they are inflated to the correct pressures.
Do not forget to check the spare tire.
Tire Wear Inspection
Tire rotation ...
Retained Accessory Power (RAP)
Your vehicle has a Retained Accessory
Power (RAP) feature which lets certain features of
your vehicle to continue to work up to 20 minutes
after the ignition key is turned to LOCK.
The radio, po ...
OnStar® Steering Wheel Controls
Your vehicle may have a Talk/Mute button that
can be used to interact with OnStar® Hands-Free
Calling.
On some vehicles, you may have to hold the
button for a few seconds and give the command
...