Got a new blower motor and resistor and when I wire it up nothing happens?
2005 GMC SIERRA
217,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
LESLIE MICHELLE GOURLEY
MEMBER
2 POSTS
Got a new blower motor and resistor and when I wire it up nothing happens. All fuses are good.
Jan 4, 2023 at 12:42 PM
Advertisement
STRAILER
✓ASE Certified Mechanic
54,832 POSTS
When you did the blower motor did you replace the speed control resistor as well? Also let's check for power at BLWR fuse under the hood here is a guide that will help and i have included the blower motor speed control location and replacement instructions in the images below.
There is power at the fuse and I replaced the speed control resistor as well.
Jan 5, 2023 at 11:10 AM
STRAILER
✓ASE Certified Mechanic
54,832 POSTS
Can we check for power at the red wire at the speed controller (resistor?) Also, can we check for ground at the black wire? here is a guide also I have included the wiring diagrams for the blower motor so you can see how it works:
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.