See also:

Automatic Operation
The system automatically controls the fan speed, air delivery, air conditioning, and recirculation in order to heat or cool the vehicle to the desired temperature. When the AUTO indicator lig ...

Auto Fan Speed
This will allow you to select the automatic fan speed. It can be adjusted to run lower or higher than normal. Press SELECT when Auto Fan Speed is highlighted to open the menu. Turn the Menu ...

Reporting Safety Defects to General Motors
In addition to notifying NHTSA (or Transport Canada) in a situation like this, please notify General Motors. Call 1-800-521-7300, or write: Buick Customer Assistance Center P.O. Box 33136 Detroit, M ...