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 InformationEngine Exhaust
Warning
Engine exhaust contains carbon monoxide (CO) which cannot be seen
or smelled. Exposure to CO can cause unconsciousness and even death.
Exhaust may enter the vehicle if:
The vehicle idles in areas with poor ventilation (parking
garages, tunnels, deep snow that may block underbody a ...
Radio Reception
Frequency interference and static can occur during normal radio reception if
items such as mobile phone chargers, vehicle convenience accessories, and external
electronic devices are plugged into the accessory power outlet. If there is interference
or static, unplug the item from the accessory ...
Cruise Control Light
For vehicles with cruise control,
the cruise control light is white when the cruise control is on and ready, and turns
green when the cruise control is set and active.
The light turns off when the cruise control is turned off. See Cruise Control
on page 9-30.
Door Ajar Light
This light come ...