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Old 06-16-2017, 10:44 AM   #7
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Join Date: May 2004
Location: Phoenix, Arizona
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Re: 2004 weird heat issue

Originally Posted by 71chevmal View Post
It was the module in the duct again. Normally it fails closed but this time it was open. I'm averaging one of these modules a year. Anyone got a solution?
I replaced that actuator in my 2005 Yukon with one from Dorman about two years ago. We had gone 2 years with it switched into the AC mode and then I disconnected the harness to keep it there.

"Loved" that I had to grind down my 5.5mm socket shorter at both ends for access, and the @$^%&*#@$^&*$# hump was still in the way !!! Other type of fasteners would've been easy to do.
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