OnStar Services
See also:
Wheel Alignment
Wheel alignment is critical for
ensuring that the tires deliver
optimal wear and performance.
- Signs that the alignment may
need to be adjusted include
pulling, improper vehicle
handling, ...
Engine Cooling System Messages
ENGINE HOT A/C
(AIR CONDITIONING) OFF
This message displays when the
engine coolant becomes hotter than
the normal operating temperature.
See Engine Coolant Temperature
Gauge. To avoid
add ...
SERVICE ALL WHEEL DRIVE
This message displays if a problem
occurs with the All-Wheel Drive
(AWD) system. The vehicle will run
in 2WD. This could be caused by:
- An electronics problem
- An AWD system oil overheat
- ...






