Function: This blower motor controls the fan speed in your AC and heating system. If your vehicles air conditioner no longer blows or if you can no longer adjust the air flow with your air conditioning controls, it may be time to replace your vehicles blower motor . Located under the panel on the passenger Simply remove the screws, unplug the electrical connector on the and the that secure the blower motor from the blower, remove the or heater control relay assembly, and install the new in place. Type: AC Blower Motor Resistor NO.: 4P1516 Other Part Number: 52409643 93803636 52413530 89018778 MT1805 RU-631 JA1639 Installation method: Directly plug and play style Fitment Type: Direct Replacement Fitment: For 2004-2006 For Escalade 2003-2006 Escalade ESV EXT 2003-2006 For 1500 2003-2006 2500 2003-2006 SSR 2003-2006 1500 2003-2006 1500 HD 2003-2006 2500 2003-2004 2500 HD 2003-2006 3500 2003-2006 1500 2003-2006 2500 2003-2006 2003-2006 Trailblazer 2003-2006 Trailblazer EXT 2003-2006 For