General description The HVAC Blower Motor Resistor, also known as BMR, controls the speed of the vehicle's blower motor. A faulty blower motor resistor can lead to poor cabin cooling or heating, insufficient defrosting or deicing of the windshield, and reduced visibility for the driver. When replacing a faulty blower motor resistor, it is important to check the functionality of other components in the HVAC system, as they may contribute to the resistor's failure. Technical specifications Color: Black Material: Plastic + Metal Measurement allowed error: +/- 1-3 cm Compatibility and accessories Fits the following models with automatic AC controls or with early modules labeled 52413530 or 52409643: 2004-2006 Escalade (including ESV and EXT) 2003-2006 1500, 2500 2003-2006 SSR 2003-2006 Trailblazer (including EXT) 2003-2006 Envoy (including Envoy XL) 2004-2005 Envoy XUV 2003-2006 Ascender 2003-2004 Bravada 2005-2006 9-7x Installation Direct fit with correct connector; cut or splice as