Use the following steps to perform the calibration update:

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, select HVAC Systems Automatic.
4. Select Special Functions.
5. Select HVAC.
6. Select Calibrate HVAC Module.
7. Select ON, wait 30 seconds.

1. Turn OFF the ignition.
2. Remove the battery positive voltage circuit fuse of the HVAC control module.

Important: The module memory will not clear if the battery positive voltage circuit fuse is installed in less than 60 seconds.

3. Wait 60 seconds.
4. Install the fuse.