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 v ...

Transferring Service

Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has changed, ...

See also:

Readiness for Inspection/Maintenance (I/M) test
A vehicle equipped with All-Wheel Drive (AWD) should never be tested using a two wheel dynamometer (such as the dynamometers used by some states for emissions testing), or similar equipment. M ...

Setting the automatic connection confirmation display to on or off
If the “Display Setting” is set to on, the portable player connection status will be displayed when the engine switch is turned to the “ACC” or “ON” position. 1 Select “Display Settin ...

ABS warning light
Refer to “ABS warning light”. ...