Hands-Free Calling
1. Push 
. System responds:
“OnStar ready.”.
2. Say “Dial.” System responds:
“Please say the name or number to call.”.
3. Say the entire number without pausing, including a “1” and the area code. System responds:
“OK calling.”
See also:
Scheduling Service
Appointments
(U.S. and Canada)
When the vehicle requires
warranty service, contact your
dealer and request an appointment.
By scheduling a service
appointment and advising the
service consultant of your
transportation ne ...
Tire Messages
SERVICE TIRE MONITOR SYSTEM
This message displays if there is a problem with the Tire Pressure Monitor
System (TPMS). See Tire Pressure Monitor Operation for more information.
TIRE LEARNING ACT ...
Selecting the Right Engine Oil
Selecting the right engine oil
depends on both the proper oil
specification and viscosity grade.
See Recommended Fluids and
Lubricants. ...