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 InformationIf the Vehicle Is Stuck
Slowly and cautiously spin the wheels to free the vehicle when stuck in sand,
mud, ice, or snow.
If stuck too severely for the traction system to free the vehicle, turn the traction
system off and use the rocking method. See Traction Control/Electronic Stability
Control on page 9-27.
Warning ...
Cooling System
The cooling system allows the engine to maintain the correct working temperature.
Engine Coolant Surge Tank and Pressure Cap
Engine Cooling Fan (Out of View)
Warning
An electric engine cooling fan under the hood can start up
even when the engine is not running and can cause injur ...
Menu System
Controls
The MENU/TUNE knob and BACK button
are used to navigate the menu system.
MENU/TUNE Knob:
Turn to:
Highlight a menu option.
Select a value.
Press to:
Enter the menu system.
Select or activate the highlighted menu option.
Confirm a set value.
Turn a system setting on ...