Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems.
It also checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring System.
If a diagnostics check is needed between e-mails, push 
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Advisor can run a check.
See also:
Hood
To open the hood:
1. Pull the release handle with the above symbol on it. It is located below
the instrument panel to the left of the steering wheel.
2. Move the secondary hood release ...
Engine Overheating
The vehicle has several indicators
to warn of engine overheating.
There are two engine hot messages
that may be displayed in the Driver
Information Center (DIC). See
Engine Cooling System Mes ...
Heated and Ventilated Front Seats
WARNING
If you cannot feel temperature change or pain to the skin, the seat heater may
cause burns even at low temperatures. To reduce the risk of burns, people with such
a condition should ...