GMC Envoy:

AC/Heater fan will not turn off even when car is off

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#1 10/30/2011 4:44 AM

scbk
New member
Registered: 10/30/2011
Posts: 1

AC/Heater fan will not turn off even when car is off

My AC/ Heater fan would not turn off by pushing off button or pushing arrow down to lowest level or even turning off the car.  What can I do?  It is a 2003 GMC Envoy.

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#2 10/31/2011 12:02 AM

TechHelp2
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Registered: 11/24/2009
Posts: 1268

Re: AC/Heater fan will not turn off even when car is off

It sounds like the blower module is faulty and would need to be replaced.


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#3 11/1/2011 12:35 PM

Administrator
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Registered: 9/27/2008
Posts: 1279

Re: AC/Heater fan will not turn off even when car is off

There's a technical service bulletin describing the blower motor control module not working or keeping the blower on in extreme low temperatures. Is it cold where you are?

Also, the module is only used with automatic climate control. If you have a manual system, it could just be a stuck relay.


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