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 InformationTire 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 on page 10-48.
Check engine oil level and oil life percentage. If needed, change engine
oil and filter, and reset oil life system. See Engine Oil on page 10-8 and Engine
Oil Life Syste ...
Engine Oil Life System
The engine oil life system calculates engine oil life based on vehicle use and
displays %CHANGE DIC message when it
is necessary to change the engine oil and filter.
The oil life system should be reset to 100% only following an oil change.
Resetting the Oil Life System
Display %on the DI ...
Tire Pressure Monitor
This vehicle may have a Tire Pressure Monitor System (TPMS).
The low tire pressure warning light
alerts to a significant loss in pressure of one of the vehicle's tires. If the warning
light comes on, stop as soon as possible and inflate the tires to the recommended
pressure shown on the T ...