Question about 2000 Chevrolet Monte Carlo

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The heater/ac blower has stopped completely after a period of time working intermitently. What could be the problem(s) and how do I remove/replace the blower switch on the dash. It only had three speeds when I bought it.

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  • tcadams Nov 19, 2009

    It did not speed up & slow down but would not work on all speeds. It would stop and start again without moving the switch and has now completly stopped working. It acted as though when the switch would get hot it would stop and after a while start again. I am hoping that it is just the switch and would like to know how to replace it if you feel this could be the problem.

    thanks

  • Dustin May 11, 2010

    when the fan worked erratically, did it gradually speed up and slow down, perhaps stopping on occasion?

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  • Master
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There are two possible problems with it. The first is the switch, and the second is the heater motor itsself. Since the switch is easier and cheaper, I would start there. You'll have to pull off the trim ring on the dash...chevrolet likes to put a border like thing around the dash components that just snaps in in order to hide the gaps and screws. Once this is out, you will be able to access the screws for the panel that contains the switch. Then it'll be a matter of simply removing the switch, and replacing it. If that doesn't fix it, then you will have to replace the fan motor. It's possible that the brushes inside are worn out from use by now, due to age of the vehicle, causing intermittent operation. Good luck, and hope you get it fixed quickly.

Posted on Nov 20, 2009

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  • Contributor
  • 14 Answers

There could be another issue that needs attention. The vehicle's blower speed is not only controlled by the switch on the panel, but also a blower motor resistor, which is located under the passenger's side dash, right next to the blower motor. The best way to determine if that is the problem without the use of a multi-meter is to turn the interior blower on, if it's not working, tap the bottom of the blower motor housing and see if it starts to spin. If so, it's probably the blower motor, but the resistor is a common problem. It's unlikely that the selector switch has failed in my experience.

Posted on Nov 20, 2009

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