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When I turn the car off, the A/C Blower Motor stays running?

Tiny
SOCUSM2010
  • MEMBER
  • 2011 CHEVROLET AVALANCHE
  • 2WD
  • AUTOMATIC
  • 215,000 MILES
I went to Auto Zone and got another Fan Control Relay, and it is still doing the same thing. Both the Fan Motor and Resistor have been replaced by Firestone, however, the Fan keeps running. I was told that I might have to take it to an electrical shop to see what is going on.
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Wednesday, March 8th, 2023 AT 8:34 PM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,570 POSTS
If you replaced the blower module the only thing left that controls the blower is the main HVAC control head in the dash. For testing you need to get to the connector on the rear of the control head. Then you unplug it, if the fan still runs there is a problem in the wiring between the control head and the blower control module. If it stops then you need to replace the control head itself. It doesn't require any programming and is plug and play.
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Thursday, March 9th, 2023 AT 11:28 PM

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