See also:

Lockout Protection
This feature protects you from locking the key in the vehicle when the key is in the ignition and a front door is open. If the driver side power door lock switch is pressed when the driver door is op ...

Specification
Use and ask for licensed engine oils with the dexos1™ approved certification mark. Engine oils meeting the requirements for the vehicle should have the dexos™1 approved certification mark. This ce ...

Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment on page 9‑64. Added electrical equipment ...