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:
Safety Locks
The vehicle has rear door security locks to prevent passengers from opening the
rear doors from the inside.
Open the rear doors to access the security locks on the inside edge of each door.
To s ...
Filling the Tank
WARNING
Fuel vapor burns violently and a fuel fire can cause bad injuries.
To help avoid injuries to you and others, read and follow all the instructions
on the fuel pump island. Turn off the engi ...
Fuel Gauge
Metric
English
When the ignition is on, the fuel gauge indicates about how much fuel is
left in the tank.
An arrow on the fuel gauge indicates the side of the vehicle the fuel door
...