GMC Terrain: Climate Control Systems / Dual Automatic Climate Control System

With this system the heating, cooling, and ventilation in the vehicle can be controlled.

GMC Terrain. Dual Automatic Climate Control System

  1. Driver Temperature Control
  2. A/C (Air Conditioning)
  3. Air Delivery Mode Controls
  4. Fan Control
  5. Defrost
  6. Passenger Temperature Control
  7. SYNC (Synchronized Temperature)
  8. Rear Window Defogger
  9. Power Button
  10. Air Recirculation
  11. AUTO (Automatic Operation)

Automatic Operation

The system automatically controls the following four functions to heat or cool the vehicle to the desired temperature:

  • Fan Speed
  • Air Delivery Mode
  • Air Conditioning
  • Recirculation

When the AUTO indicator light is lit, all four functions are operating automatically. Each function can be manually set and the selected setting will be shown. This cancels full automatic operation and the AUTO indicator light turns off. Functions that are not manually set will continue to be automatically controlled, although the AUTO indicator light will not be lit.

To place the system in automatic mode:

  1. Press AUTO.
  2. Set the driver and passenger temperature.

    To find your comfort setting, start with 22 °C (72 °F) and allow the system time to stabilize. Then adjust the temperature as needed for best comfort.

To improve fuel efficiency and to cool the vehicle faster, recirculation may be automatically selected in warm weather.

The recirculation light will not come on when automatically controlled.

Press GMC Terrain. Dual Automatic Climate Control System to manually select recirculation; press it again to select outside air.

Do not cover the solar sensor on the top of the instrument panel near the windshield. This sensor regulates air temperature based on sun load. See “Sensor” later in this section.

Manual Operation

GMC Terrain. Dual Automatic Climate Control System : Press to turn the climate control system on or off. When off, no air will flow into the vehicle. Turning the fan on, pressing any other button, or turning a knob will turn the system back on.

GMC Terrain. Dual Automatic Climate Control System : Turn clockwise or counterclockwise to increase or decrease the fan speed. Press the knob to turn the fan off.

Press AUTO to return to automatic operation.

Driver and Passenger Temperature Control : The temperature can be adjusted separately for the driver and passenger.

Turn the knob clockwise or counterclockwise to increase or decrease the driver or passenger temperature setting.

SYNC : Press to link the passenger temperature settings to the driver setting. The SYNC indicator light will turn on. When the passenger temperature settings are adjusted, the SYNC indicator light is off.

The driver side or passenger side temperature display shows the temperature setting increasing or decreasing.

Air Delivery Mode Control : Press GMC Terrain. Dual Automatic Climate Control System, GMC Terrain. Dual Automatic Climate Control System, GMC Terrain. Dual Automatic Climate Control System, or GMC Terrain. Dual Automatic Climate Control System to change the direction of the airflow. An indicator light comes on in the selected mode button.

Changing the mode cancels the automatic operation and the system goes into manual mode. Press AUTO to return to automatic operation.

GMC Terrain. Dual Automatic Climate Control System : Air is directed to the instrument panel outlets.

GMC Terrain. Dual Automatic Climate Control System : Air is divided between the instrument panel and floor outlets.

GMC Terrain. Dual Automatic Climate Control System : Air is directed to the floor outlets, with some to the windshield, side window outlets, and second row floor outlets.

GMC Terrain. Dual Automatic Climate Control System : This mode clears the windows of fog or moisture. Air is directed to the windshield, floor outlets, and side window vents.

GMC Terrain. Dual Automatic Climate Control System : Press to clear the windshield of fog or frost more quickly. Air is directed to the windshield and the side window vents. The air conditioning compressor also comes on, unless the outside temperature is below freezing.

Do not drive the vehicle until all windows are clear.

See Air Vents.

A/C : Press to turn the air conditioning system on or off. An indicator light comes on to show that the air conditioning is enabled. If the fan is turned off, the air conditioner will not run. The A/C light will stay on even if the outside temperatures are below freezing and the A/C compressor may be off.

GMC Terrain. Dual Automatic Climate Control System : Press to turn on recirculation. An indicator light comes on. Air is recirculated to quickly cool the inside of the vehicle. It can also be used to help reduce outside air and odors that enter the vehicle.

Rear Window Defogger

The rear window defogger uses a warming grid to remove fog from the rear window.

-GMC Terrain. Dual Automatic Climate Control System : Press to turn the rear window defogger on or off. An indicator light on the button comes on to show that the rear window defogger is on. The rear window defogger only works when the ignition is on. The defogger turns off if the ignition is turned off or to ACC/ACCESSORY.

Caution

Using a razor blade or sharp object to clear the inside rear window can damage the rear window defogger. Repairs would not be covered by the vehicle warranty. Do not clear the inside rear window with sharp objects.

Heated Mirror : If equipped with heated outside mirrors, the mirrors heat to help clear fog or frost from the surface of the mirror when the rear window defog button is pressed. See Heated Mirrors.

Sensor

The solar sensor, on top of the instrument panel near the windshield, monitors the solar heat.

The climate control system uses the sensor information to adjust the temperature, fan speed, recirculation, and air delivery mode for best comfort. The automatic recirculation mode sensitivity can be adjusted. See “Air Quality Sensor” under Vehicle Personalization.

Do not cover the sensor; otherwise the automatic climate control system may not work properly.

    Climate Control Systems

    With this system the heating, cooling, and ventilation in the vehicle can be controlled. Fan Control A/C (Air Conditioning) Air Delivery Mode Controls Defrost TEMP (Temperature Control) Rear Window Defogger Air Recirculation : Turn clockwise or counterclockwise to increase or decrease the fan speed or turn the fan off...

    Air Vents

    Use the louvers located on the air vents to change the direction of the airflow. To open or close off the airflow: On the center air vents, move the slider knobs up or down...

    Other information:

    GMC Terrain 2018-2021 Owners Manual: Manual Operation


    Select OFF to manually operate the liftgate. Caution Attempting to move the liftgate too quickly and with excessive force may result in damage to the vehicle. Operate the liftgate manually with a smooth motion and moderate speed. The system includes a feature which limits the manual closing speed to protect the components...

    GMC Terrain 2018-2021 Owners Manual: Courtesy Transportation Program


    To enhance your ownership experience, we and our participating dealers are proud to offer Courtesy Transportation, a customer support program for vehicles with the Bumper-to-Bumper (Base Warranty Coverage period in Canada), extended powertrain, and/or hybrid-specific warranties in both the U...

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      Vehicle Messages

      Messages displayed on the DIC indicate the status of the vehicle or some action that may be needed to correct a condition. Multiple messages may appear one after another.

      The messages that do not require immediate action can be acknowledged and cleared by pressing V. The messages that require immediate action cannot be cleared until that action is performed.

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