See also:

Running the Engine While Parked
It is better not to park with the engine running. But if you ever have to, here are some things to know. CAUTION: Idling the engine with the climate control system off could allow dangerous exha ...

Battery Voltage and Charging Messages
BATTERY SAVER ACTIVE This message displays when the vehicle has detected that the battery voltage is dropping beyond a reasonable point. The battery saver system starts reducing certain features ...

Security
OnStar provides services like Stolen Vehicle Assistance, Remote Ignition Block, and Roadside Assistance, if the vehicle is equipped with these services. OnStar can unlock the vehicle doors remotel ...