Removal Procedure
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
Heater and Air Conditioning Evaporator and Blower Module (2) - Remove - Heater and Air Conditioning Evaporator and Blower Module Removal and Installation
Air Conditioning Evaporator and Blower Module Drain Hose (1) - Remove