See also:

Manual Lumbar
Manual Lumbar If equipped, increase or decrease manual lumbar support by turning the knob forward or rearward. ...

Automatic Operation
AUTO (Automatic): When automatic operation is active, the system controls the inside temperature, the air delivery, and the fan speed. Use the steps below to place the entire system in automatic mode ...

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: ...