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Blend Door Actuator Diagnosis

Blend Door Actuator Diagnosis

Postby generaldisarray [OP] » Feb 06 2012, 2:58am

Just purchased a 2009 Sierra 2500HD, soon realized I had cold air blowing on passenger side with the heat on. Drivers side blows nice and hot. I'm assuming I have a bad actuator. I did the HVAC fuse reset and it fixed the problem for a while, but now it is back and want to get it fixed right.

Blows cold no matter what, vent, floor or defrost.

Have looked at the parts and found that there are a few different part numbers available. Can someone tell me which actuator or actuators I need. And the location of them in the cab. Have a mechanic that works for me, that will do the work, I just was wanting to get the right part(s) and be able to point him in the general direction when he tears into the dash.
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Re: Blend Door Actuator Diagnosis

Postby 05Canuck » May 16 2014, 12:39am

It is the opposite way you would think...go figure...the actuator for the drivers side is under the fan motor hush panel on the passenger side floor and the one for the drivers is almost behind the radio but entails removing most of the dash. hope that helps. Rich
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Re: Blend Door Actuator Diagnosis

Postby 05Canuck » May 16 2014, 12:40am

you can find some pretty good video on you tube...Rich
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