Hummer H2 fan module remains on after key removal, possible climate control module issue on Hummer H2

Some Hummer H2 owners report experiencing issues with the fan module remaining on after key removal, which may indicate a fault in the climate control module. This problem can disrupt the air-conditioning system, potentially causing the AC to stop cooling. Common causes for these fan blower motor issues include a malfunctioning control module, blown fuse, bad relay, or resistor. Additionally, a defective climate control unit can lead to improper functioning of the blower motor. To resolve these issues, some owners find it necessary to diagnose the control module using an OBD2 scanner, and in certain cases, resetting the climate control system can restore functionality. It is recommended for owners facing this problem to consult a qualified technician to effectively address the underlying issues with the climate control system.