PartsSquare Heater Core Blower Motor Resistor 3A1041 RU546 89018770 Replacement for 2003 2004 2005 2006 2007 2008 2009 CHEVROLET C4500 C5500 C6500 C7500 KODIAK & GMC C4500 C5500 C6500 C7500 TOPKICK Interchange Part Number of blower motor resistor: RU-51, 12135104, 12368388, 158617, 89018537, RU546, RU581, 973-007, 89018770, 1580560, 22941007, 3A1041, 1581796 Blower Motor Resistor Replacement for: 2003 2004 2005 2006 2007 2008 2009 CHEVROLET C4500 KODIAK C5500 KODIAK C6500 KODIAK C7500 KODIAK; 2003 2004 2005 2006 2007 2008 2009 GMC C4500 TOPKICK C5500 TOPKICK C6500 TOPKICK C7500 TOPKICK; 1996 CHEVROLET G30; 1996 GMC G3500; 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 CHEVROLET EXPRESS 1500 2500 3500 4500 & GMC SAVANA 1500 2500 3500 4500; Package included: 1pc x Blower Motor Regulator Resistor Not remanufactured or rebuilt, 100% Brand New and tested prior to leaving the factory. High Quality Replacement Part, have no-worry 12 months warranty. Cut off the engine and disconnect the battery. Wait until the blower motor cool to room temperature. The most important is clearing dust for the blower motor via professional motor detergent, please dont use water to clean!!! Wait until blower motor get dry. Disconnect the electrical connector at the resistor. If the new blower motor resistor didn&#039;t work or stop work in a short time after correct replacement, please check if there was too much dust with your blower motor. Remove the negative battery terminal. Locate the blower motor resistor on the passenger side under the dash board. It is mounted to the the blower housing near the blower motor. Disconnect the electrical connector to the blower motor resistor. Remove the screws or bolts to the blower motor resistor and remove the resistor. Installation is the reverse of the removal. Not remanufactured or rebuilt. High Quality Replacement Part. Exact Fit for easy installation. 100% Brand New and tested prior to leaving the factory. High Output Exact Fit