SERVICE TIRE MONITOR SYSTEM
This message displays if a part on the Tire Pressure Monitor System (TPMS) is not working properly.
The tire pressure light also flashes and then remains on during the same ignition cycle. See Tire Pressure Light.
Several conditions may cause this message to appear. See Tire Pressure Monitor Operation for more information.
If the warning comes on and stays on, there may be a problem with the TPMS. See your dealer.
See also:
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When to Check and Change Lubricant
It is not necessary to regularly check front axle fluid unless there is a leak
suspected or an unusual noise is heard. A fluid loss could indicate a problem. Have
it inspected and repaired. ...
Turn-by-Turn
This display is used for the OnStar or Navigation System Turn-by-Turn
guidance. See OnStar Overview or the navigation manual, if the vehicle has
navigation, for more information. ...