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:
Listing Stored Numbers
The list command will list all the stored numbers and name tags.
Using the “List” Command
1. Press . The system responds “Ready,”
followed by a tone.
2. Say “Directory.”
3. Say “Ha ...
Tire Rotation and Required
Services Every 12 000 km/7,500 mi
Rotate the tires, if recommended for
the vehicle, and perform the
following services. See Tire
Rotation.
• Check engine oil level and oil
life percentage. If needed,
change engine oil and ...
Checking Brake Fluid
The brake/clutch fluid can be checked without taking off the cap by looking at the brake/clutch fluid reservoir.
The fluid level should be above MIN. If it is not, have the brake/ clutch hydraulic sy ...