The blower motor stays running and will not shut off?

2004 CHEVROLET TAHOE

200,000 MILES • 5.3L • V8 • 2WD • AUTOMATIC

B3RTOBVNDZ

MEMBER
6 POSTS

So I’ve replaced the blower motor control processor because it wouldn’t blow any air and now it blows air but when I turn the truck off the air won’t shut off, what could it be?

Dec 22, 2022 at 9:33 AM

STRAILER

✓Experienced Mechanic
55,464 POSTS

It sounds like you have a defective blower control module (resistor). here is the location and instructions on how to replace it. I would replace the blower motor as well because if it is pulling too many amps, it will cause the module to go out. Check out the images (below). Please let us know what you find.

Images (Click to enlarge)