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 Overheating
The vehicle has an indicator to warn of the engine overheating. See Engine Coolant
Temperature Warning Light on page 5-18.
If the decision is made not to lift the hood when this warning appears, get service
help right away. See Roadside Assistance Program on page 13-5.
If the decision is made ...
Driving on Snow or Ice
Drive carefully when there is snow or ice between the tires and the road, creating
less traction or grip.
Wet ice can occur at about 0°C (32° F) when freezing rain begins to fall, resulting
in even less traction. Avoid driving on wet ice or in freezing rain until roads
can be treated with sal ...
If a Tire Goes Flat
This vehicle has a tire sealant and compressor kit. See Tire Sealant and Compressor
Kit on page 10-56.
There is no spare tire, no tire changing equipment, and no place to store a tire.
It is unusual for a tire to blow out, especially if the tires are maintained
properly. See Tires on page 10-3 ...