See also:

TTY Users
OnStar has the ability to communicate to the deaf, hard-of-hearing, or speech-impaired customers while in the vehicle. The available dealer-installed TTY system can provide in-vehicle acce ...

Checking Engine Oil
It is a good idea to check the engine oil every time you get fuel. In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground. The engine oil dipstick hand ...

Setting the Clock (Radio with CD and Touchscreen)
The clock menu can be only be used with the radio on while in ON/RUN or ACC/ACCESSORY. To set the time: 1. Press the CONFIG button to enter the menu options or press H. Turn the TUNE/MENU knob to ...