OnStar Vehicle Diagnostics can perform a vehicle check every month. It will check
the engine, transmission, antilock brakes, and other major vehicle systems. It also
checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring
System. If an On-Demand Diagnostics check is needed, press
, and an Advisor can run a check.
Connections
OnStar Additional InformationTire Sidewall Labeling
Useful information about a tire is molded into its sidewall. The examples show
a typical passenger tire sidewall.
Passenger (P-Metric) Tire Example
(1) Tire Size: The tire size is a combination of letters and numbers used to
define a particular tire's width, height, aspect ratio, const ...
Automatic Transmission Shift Lock Control Function Check
Warning
When you are doing this inspection, the vehicle could move suddenly.
If the vehicle moves, you or others could be injured.
Before starting this check, be sure there is enough room around the vehicle.
It should be parked on a level surface.
Apply the parking brake. Be ready to app ...
Where Are the Airbags?
The driver frontal airbag is in the center of the steering wheel.
The front outboard passenger frontal airbag is in the passenger side instrument
panel.
The driver knee airbag is below the steering column. The front outboard passenger
knee airbag is below the glove box.
Driver Sid ...