Blower motor not working properly

Tiny
8989
  • MEMBER
  • 2005 GMC YUKON
  • V8
  • 4WD
  • 200,000 MILES
The blower motor does not come on when in the dash. But if you take it out of place still plugged up and turn key on it will kick on. Could this be a wire issue?
Wednesday, October 23rd, 2019 AT 1:27 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Hi,

So you are not unhooking the electrical connector and it runs when it is out of the housing? If so, I would think there was an obstruction causing it to not spin. If nothing there, then yes. More than likely when you take it out you are putting pressure on the wiring connector and it makes contact. The best way to test that is to perform what is called a wiggle test.

That means you need to hook it up and turn it on where it is not working. Then gently move the wiring harness around, bending the wiring and putting pressure on the connector to see if you can get the fan to kick on. If it does then you need to replace this connector. If not, then we have another issue and I am not sure what that would be if not one of these two things.

Let me know what you find and we can go from there. Thanks
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Wednesday, October 23rd, 2019 AT 6:41 PM

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