HVAC Control Module Replacement
WARNING: This page is about a different car, the 2006 Pontiac Torrent and 2006 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
If the HVAC control module is replaced, the following procedure must be performed:
Re-Calibrating Actuators-Refer to Re-Calibrating Actuators in HVAC Systems - Manual.