A/C blower motor not working?

CMCCRORY

MEMBER
2012 GMC TERRAIN
2.4L
6 CYL
2WD
AUTOMATIC
162,150 MILES

A/C and heater aren't working when I turn it on but as long as it is on and circulating from the outside and I'm driving I have a small amount of airflow. When I stop I have nothing. Before it started this I was experiencing a knocking like sound when I would turn it on, and the pressure of air coming out of the vents would fluctuate even when it was on high.

1 Reply

KEN L

ADMIN

This sounds like the blower motor needs to be replaced. here is the location of the blower motor and a generic guide to help you test for power and check the ground. Check the images below.

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Check out the images (below). Please let us know what happens.

Images (Click to enlarge)