When replacing an air temperature, mode, recirculation actuator or HVAC control module the following calibration process needs to be performed:

Important: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result.

1. Place the ignition switch to the OFF position.
2. Disconnect the battery.
3. Disconnect the scan tool.
4. Install the HVAC control module or appropriate actuator.
5. Connect all previously disconnected components.
6. Connect the battery.
7. Place the ignition switch to the ON position.
8. Calibration of the air temperature, recirculation and mode doors happens taking roughly 13 seconds.
9. Verify that no DTCs have set as current DTCs.