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 InformationHill and Mountain Roads
Driving on steep hills or through mountains is different than driving on flat
or rolling terrain. Tips for driving in these conditions include:
Keep the vehicle serviced and in good shape.
Check all fluid levels and brakes, tires, cooling system, and transmission.
Shift to a lower gear whe ...
Smartphone Link (Pandora)
Some images and explanations may vary by phone operating systems, versions, and/or
application (App) versions.
Using Pandora
Install the Pandora application on the smartphone.
Connect the smartphone to the infotainment system through the USB port or
Bluetooth wireless technology.
i ...
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 ...