Compatible with: 1995-2002 Chevrolet Blazer 1995-2004 Chevrolet S10 1995-1997 GMC Jimmy 1995-2003 GMC Sonoma 1996-1997 Oldsmobile Bravada Package Includes: 1x Blower Motor,1x Blower Motor Resistor The function of the blower: The blower is part of your car's air conditioning system. Adjusting the fan speed sends a signal through the resistor to the blower motor to speed up or slow down. How to know if your blower motor needs to be replaced: No or little airflow. Making unusual noises, rattling or squealing. There is a strange smell. Attention: *Professional Installation is Highly Recommended. .
