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:
Dolly Towing (All-Wheel&-Drive Vehicles)
All-wheel&-drive vehicles should not be towed with two wheels on the ground.
To properly tow these vehicles, they should be placed on a platform trailer with
all four wheels off of the ground ...
Receiving a Call
When an incoming call is received, the audio system mutes and a ring tone is heard in the vehicle.
• Press to answer the call.
• Press to ignore a call. ...
Vehicle Information Menu Items (with DIC Buttons)
(Vehicle Information): Press this button to scroll through the following menu items: ...





