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 InformationDoing Your Own Service Work
Warning
It can be dangerous to work on your vehicle if you do not have
the proper knowledge, service manual, tools, or parts. Always follow owner manual
procedures and consult the service manual for your vehicle before doing any service
work.
If doing some of your own service work, use the p ...
Engine Coolant Temperature Warning Light
This light comes on briefly while
starting the vehicle.
If it does not, have the vehicle serviced by your dealer. If the system is working
normally the indicator light goes off.
Caution
The engine coolant temperature warning light indicates that the
vehicle has overheated. Driving with this ...
Washer Fluid
What to Use
When windshield washer fluid is needed, be sure to read the manufacturer's instructions
before use. If operating the vehicle in an area where the temperature may fall below
freezing, use a fluid that has sufficient protection against freezing.
Adding Washer Fluid
Open the cap ...