Service Vehicle Messages
SERVICE A/C SYSTEM
This message displays when the electronic sensors that control the air conditioning and heating systems are no longer working.
Have the climate control system serviced by your dealer if you notice a drop in heating and air conditioning efficiency.
SERVICE VEHICLE SOON
This message displays when a non-emissions related malfunction occurs. Have the vehicle serviced by your dealer as soon as possible.
See also:
Cruise Control Messages
APPLY BRAKE BEFORE CRUISE
If this message displays when attempting to activate cruise control, apply
the brake pedal and try again.
CRUISE SET TO XXX
This message displays when the cruise co ...
Vehicle and Power Issues
OnStar services require a vehicle
electrical system, wireless service,
and GPS satellite technologies to be
available and operating for features
to function properly. These systems
may not o ...
Parade Dimming
This feature does not let the
instrument panel display screens
dim during daylight hours while the
ignition is in the ACC/ACCESSORY
or ON/RUN position and the parking
lamps or headlamps are ...