Calibrating IPM
WARNING: This page is about a different car, the 2002 Cadillac Seville. However, it is still accessible from the selected car via links, so may be relevant.
Start the engine and let run for one minute. 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. The engine must be running for proper calibration to occur.