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Blower motor is working intermittently

Tiny
RONNIE G
  • MEMBER
  • 2002 CHEVROLET AVALANCHE
  • 180,000 MILES
My blower motor fan works for a while then will stop. It wont work on any speed for long. I replaced the blower fan module already and I still have the same problem. Do I need to replace fan selector switch. This is a 2002 avalanche when I turn on the a/c or the heat sometimes the fan will work sometimes it will not.

How can I check the fan speed selector to see if it works properly. Or do you have any other suggestions on what the problem is. When the a/c or heat does come on it blows cold or hot but the fan blows only one speed no matter where the fan switch is set.
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Sunday, January 8th, 2012 AT 4:57 PM

2 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Seems to be a failing fan motor. Give the fan motor housing a little banging with you hands and if the motors starts working, it is due for replacement.
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Sunday, January 8th, 2012 AT 6:56 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
When its goes out us a test light to check the power and ground to the motor.
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Sunday, January 8th, 2012 AT 7:00 PM

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