Compatibility Vehicle: 2010 Buick LaCrosse About Blower Motor The blower motor in a car is a small electrical motor located inside the vehicle’s heating and air conditioning duct. The blower motor works in conjunction with the heater core by drawing air from outside the vehicle and blowing it across the core. This heated air is then used to warm the passenger cabin. The blower motor on your car may fail with little or no warning, but if you notice your heater is underperforming or you hear a grinding or scraping noise coming from the firewall on the passenger side of the vehicle, it could be a sign that the blower motor will soon need to be replaced. .
