General description The AC Blower Motor Control Module Blower Resistor is designed to control the fan speed of your vehicle's air conditioning and heating system. If your air conditioner is not blowing air or you cannot adjust the airflow, it may be time to replace this component. Technical specifications Type: AC Blower Motor Resistor Part No: 4P1516 Other Part Numbers: 52409643, 93803636, 52413530, 89018778, MT1805, RU-631, JA1639 Material: Plastic + Metal Color: Silver + Black Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with Chevy Silverado (2003-2006) Compatible with Buick Rainier (2004-2006) Compatible with Escalade (2003-2006) Compatible with Suburban (2003-2006) Compatible with Envoy (2003-2006) Compatible with Ascender (2003-2006) Compatible with Bravada (2003-2004) Compatible with 9-7x (2005-2006) Installation To install the blower resistor, follow these steps: Locate the module under the passenger panel. Remove the screws securing the