Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring System.
If a diagnostics check is needed between e-mails, push 
, and an Advisor can run a check.
See also:
Bluetooth Controls
Use the buttons located on the steering wheel to operate the invehicle Bluetooth system. See Steering Wheel Controls on page 5‑3 for more information.
(Mute/Push To Talk): Press to answer inco ...
Tire Rotation
Tires should be rotated every 12 000 km (7,500 mi).
See Maintenance Schedule on page 11‑3.
Tires are rotated to achieve a uniform wear for all tires.
The first rotation is the most important. ...
Call Waiting
Call waiting must be supported on the cell phone and enabled by the wireless service carrier.
• Press to answer an incoming call when another call is active. The original call is placed on hold.
...