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:
Tire Sidewall Labeling
Useful information about a tire is molded into the sidewall. The example shows
a typical passenger vehicle tire sidewall.
Passenger (P-Metric) Tire
(A) Tire Size: The tire size code is a combina ...
Resetting the Power Folding Mirrors
Reset the power folding mirrors if:
The mirrors are accidentally obstructed while folding.
They are accidentally manually folded/unfolded.
The mirrors will not stay in the unfolded position.
...
Connecting and Controlling a USB Drive
The infotainment system can only play back .mp3 and .wma files from a USB
drive.
Only the first 10,000 songs are recognized on the device.
When a device is not supported, the message “No suppor ...