2004 Chevrolet Silverado blower motor not working

Tiny
ALGAJR
  • MEMBER
  • 2004 CHEVROLET SILVERADO
  • 133,000 MILES
My blower motor is not working, I changed the resister, and the connecting harness that connects to it. I also checked the fuse and the fuse is good also, there is power coming from the connector going into the resister, but the pigtail that comes from the resister and plugs into the blower motor do not have power coming from it.
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Wednesday, November 13th, 2013 AT 7:56 AM

15 Replies

Tiny
WRENCHTECH
  • EXPERT
Test for power coming into the resister at various speeds for the corresponding wire colors.

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Wednesday, November 13th, 2013 AT 8:25 AM
Tiny
ALGAJR
  • MEMBER
There is no other power going into the resister besides the power from the red wire, I test all the wires and turned the knob on the control switch to all the speeds
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Wednesday, November 13th, 2013 AT 8:31 AM
Tiny
WRENCHTECH
  • EXPERT
Then check the HTR-AC fuse (30a) in the inside fuse box.
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Wednesday, November 13th, 2013 AT 8:39 AM
Tiny
ALGAJR
  • MEMBER
I checked the fuses and their not blown, I rechecked the wires and cycled through the switch and the only one with power is the red wire, can the problem be the ac control switch
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Wednesday, November 13th, 2013 AT 9:48 AM
Tiny
ALGAJR
  • MEMBER
I checked the fuses and their not blown, I rechecked the wires and cycled through the switch and the only one with power is the red wire, can the problem be the ac control switch
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Wednesday, November 13th, 2013 AT 11:23 AM
Tiny
WRENCHTECH
  • EXPERT
If you're sure about the results of those tests, then you have a bad switch.
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Wednesday, November 13th, 2013 AT 11:49 AM
Tiny
ALGAJR
  • MEMBER
The switch can cause power not to go through the wires
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Wednesday, November 13th, 2013 AT 11:53 AM
Tiny
ALGAJR
  • MEMBER
Can I hook up a toggle switch until I can get another control switch
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Wednesday, November 13th, 2013 AT 1:03 PM
Tiny
WRENCHTECH
  • EXPERT
No, there is too much current flow for that. You're risking fire that way.
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Wednesday, November 13th, 2013 AT 1:12 PM
Tiny
ALGAJR
  • MEMBER
Is there anyway the control switch can be tested, it cost over hundred dollars for a new one
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Wednesday, November 13th, 2013 AT 2:32 PM
Tiny
WRENCHTECH
  • EXPERT
I gave you the wiring diagram. You can test any part of the circuit by following that. The only thing left that you haven't tested already is the connection of the plug itself at the switch.
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Wednesday, November 13th, 2013 AT 2:37 PM
Tiny
ALGAJR
  • MEMBER
Do I turn the speed control knob while im testing the wires from the switch
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Wednesday, November 13th, 2013 AT 3:19 PM
Tiny
WRENCHTECH
  • EXPERT
You follow the wiring diagram. You can see which color wire should be hot in which switch position. The incoming power supply is the brown wire.
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Wednesday, November 13th, 2013 AT 3:30 PM
Tiny
ALGAJR
  • MEMBER
Does the ac control switch make a clicking noise when it's going bad
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Thursday, November 14th, 2013 AT 6:50 AM
Tiny
WRENCHTECH
  • EXPERT
I have no idea. You just need to perform the electrical testing or bring it to a shop that can do it for you.
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Thursday, November 14th, 2013 AT 7:16 AM

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