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:
SERVICE BRAKE SYSTEM
This message displays, while the
ignition is on, when the brake fluid
level is low. The brake system
warning light on the instrument
panel cluster also comes on.
See Brake System Warning Ligh ...
Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on
a specified government test
course. For example, a tire
graded 150 ...
Sensors
The solar sensor, located on top of the instrument panel near the
windshield, monitors the solar heat.
The climate control system uses the sensor information to adjust the
temperature, fan speed, ...