Manual Operation

control system on or off. (Power): Press to turn the climate control system on or off.

or decrease the fan speed. Adjusting the fan speed while in automatic mode places (Fan Control): Turn to increase or decrease the fan speed. Adjusting the fan speed while in automatic mode places the fan under manual control. The AUTO indicator light turns off. The air delivery mode remains in automatic control.

Temperature Control: Turn to increase or decrease the temperature inside the vehicle.

mode up or mode down to cycle through the different air delivery modes. The current (Air Delivery Mode Control): Press mode up or mode down to cycle through the different air delivery modes. The current mode is shown on the display.

Select from the following:

panel outlets. (Vent): Air is directed to the instrument panel outlets.

instrument panel outlets and the floor outlets. (Bi-Level): Air is directed to the instrument panel outlets and the floor outlets.

floor outlets. (Floor): Air is directed to the floor outlets.

or moisture. Air is directed to the windshield and floor outlets. (Defog): Clears the windows of fog or moisture. Air is directed to the windshield and floor outlets.

windshield of fog or frost more quickly. Air is directed to the windshield and side FRONT (Front Defrost): Clears the windshield of fog or frost more quickly. Air is directed to the windshield and side window outlets. Selecting defrost disables the automatic mode.

For best results, clear all snow and ice from the windshield before defrosting.

Do not drive the vehicle until all the windows are clear.

    See also:

    Parking Brake
    To set the parking brake, hold the regular brake pedal down, then push the parking brake pedal down. If the ignition is on, the brake system warning light will come on. See Brake System Warning Li ...

    Engine Oil
    For diesel engine vehicles, see “Engine Oil” in the Duramax Diesel Supplement. To ensure proper engine performance and long life, careful attention must be paid to engine oil. Following these si ...

    Lap-Shoulder Belt
    If the vehicle is a regular cab, then all seating positions in the vehicle have a lap-shoulder belt. If the vehicle is a crew or extended cab, then all seating positions in the vehicle have a lap-shou ...