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 
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Advisor can run a check.
See also:
DVD Menu Options
Options: Press to view the menu option screen buttons. Menu options are available
when they are highlighted. Some menu options are only available when the DVD is
not playing.
Cursor: Press to acc ...
Special Application
Services
- Vehicles with manual
transmissions: Every two years
drain, flush, and fill clutch
hydraulic system.
- Severe Commercial Use
Vehicles Only: Lubricate
chassis components every
5 000 km/3, ...
Engine Coolant
The cooling system in the vehicle is filled with DEX-COOL engine coolant. This
coolant is designed to remain in the vehicle for 5 years or 240 000 km (150,000
mi), whichever occurs first.
The fol ...