My blower fan stopped working, what do I look for?
Jan 2, 2010 at 10:12 AM
My blower fan stopped working
2005 CHEVROLET SILVERADO
DINGER_GREG
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Hello,
The first item you should check is the blower motor relay.
The relay is located in the under-hood fuse box (see diagram below).
Look for any corrosion or burnt pins.
This relay can also be tested.
https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit
If the relay is good, it could be a bad blower control module (for automatic HVAC system), or a bad motor. It can also be faulty wiring. Check to see if you have power going to the motor. A short in the wiring can keep power from reaching the motor.
https://www.2carpros.com/articles/how-to-check-wiring
I have attached the diagrams for both versions below.
Please let me know of any questions.
Thank you.
The first item you should check is the blower motor relay.
The relay is located in the under-hood fuse box (see diagram below).
Look for any corrosion or burnt pins.
This relay can also be tested.
https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit
If the relay is good, it could be a bad blower control module (for automatic HVAC system), or a bad motor. It can also be faulty wiring. Check to see if you have power going to the motor. A short in the wiring can keep power from reaching the motor.
https://www.2carpros.com/articles/how-to-check-wiring
I have attached the diagrams for both versions below.
Please let me know of any questions.
Thank you.
Images (Click to enlarge)
Nov 2, 2021 at 2:54 PM
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