ACDelco 15-81728 OE Service HVAC Blower Motor Control Module GM-recommended replacement part for your GM vehicle's original factory component Offering the quality, reliability, and durability of GM OE Manufactured to GM OE specification for fit, form, and function ACDelco 15-81773 GM Original Equipment Heating and Air Conditioning Blower Control Module Meets Or Exceeds OEM Specs. Factory OEM Fit Form And Function