See also:

Customization Menu Items
(Customization): Press this button to enter the feature settings menu. This display allows you to customize the feature settings on your vehicle. See DIC Vehicle Customization for more info ...

General Information
For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people. Genuine GM parts have one of these marks: ...

How to Check Automatic Transmission Fluid (3.9L Engine)
Because this operation can be a little difficult, you may choose to have this done at the dealer/retailer service department. If you do it yourself, be sure to follow all the instructions here, ...