2003 Envoy A/C Noise

Last post on May 05, 2008 at 8:01 AM

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#1 of 1 2003 Envoy A/C Noise by crpndeth May 05, 2008 (8:01 am)
I pulled out the blower motor out of my 2003 GMC Envoy cause of a noise and think I found the source of the noise, but am looking for more information on how to fix it. The sound is connected to the motor that moves this flap that moves when you switch from fresh air to recirculating air. It seems like flap always has pressure behind it and the noise occurs whenever the flap is not in motion (a kind of whine); so I was thinking either there is a clutch or sensor that needs to disengage the motor once it's in the correct position or that motor is going bad and making that sound. Any suggestions?

#1 of 1: 2003 Envoy A/C Noise by crpndeth; May 05, 2008 (8:01 am)

I pulled out the blower motor out of my 2003 GMC Envoy cause of a noise and think I found the source of the noise, but am looking for more information on how to fix it. The sound is connected to the motor that moves this flap that moves when you switch from fresh air to recirculating air. It seems like flap always has pressure behind it and the noise occurs whenever the flap is not in motion (a kind of whine); so I was thinking either there is a clutch or sensor that needs to disengage the motor once it's in the correct position or that motor is going bad and making that sound. Any suggestions?