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 InformationWashing the Vehicle
To preserve the vehicle's finish, wash it often and out of direct sunlight.
Caution
Do not use petroleum-based, acidic, or abrasive cleaning agents
as they can damage the vehicle's paint, metal, or plastic parts. If damage occurs,
it would not be covered by the vehicle warranty. Approv ...
Engine Oil Change
When the %CHANGE DIC message displays,
have the engine oil and filter changed within the next 1 000 km/600 mi. If driven
under the best conditions, the engine oil life system may not indicate the need
for vehicle service for up to a year.
The engine oil and filter must be changed at least on ...
Safety Belt Extender
If the vehicle's safety belt will fasten around you, you should use it.
But if a safety belt is not long enough, your dealer will order you an extender.
When you go in to order it, take the heaviest coat you will wear, so the extender
will be long enough for you. To help avoid personal inju ...