OnStar Services
See also:
Database Coverage Explanations
Coverage area depends upon the map detail available. Some areas have greater
map detail than others. The navigation system works only as well as the information
provided on the stored map data. Se ...
Maintenance Schedule
Owner Checks and Services
At Each Fuel Stop
. Check the engine oil level. See Engine Oil .
Once a Month
. Check the tire inflation pressures. See Tire Pressure .
. Inspect the tires f ...
Charging System Light
The charging system light comes on
briefly when the ignition is turned
on, but the engine is not running, as
a check to show the light is working.
The light turns off when the engine
is sta ...






