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 InformationRetained Accessory Power (RAP)
These vehicle accessories may be used for up to 10 minutes after the engine is
turned off:
Audio System
Power Windows
The power windows will continue to work for up to 10 minutes or until any door
is opened. The radio will work when the key is in ON/RUN or ACC/ACCESSORY. Once
the key ...
Rear Window Wiper/ Washer
If equipped with the rear wiper/ washer, the controls are on the end of the windshield
wiper lever.
Turn the rear wiper/washer band to operate the rear window wiper/ washer.
ON: Turns the rear wiper on for continuous wipes.
OFF: Turns the rear wiper off.
(Rear Washer): Sprays washer fluid ...
Automatic Transmission Fluid
How to Check Automatic Transmission Fluid
It is not necessary to check the transmission fluid level.
A transmission fluid leak is the only reason for fluid loss. If a leak occurs,
take the vehicle to your dealer and have it repaired as soon as possible.
The vehicle is not equipped with a transm ...