All AC & heat controls work fine, except won't blow hot, only cold.

Tiny
LINDCALL
  • MEMBER
  • 2002 GMC SIERRA
  • V6
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
I was told it was the blend door actuator. It is right under the passenger side. Is there any adjusting or simple remove & replace? Is the correct part dorman 604-106 / oem 89018365?
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Sunday, October 19th, 2014 AT 8:10 PM

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Tiny
WRENCHTECH
  • MEMBER
There is no adjusting but there are other possible causes beyond the actuator motor itself. It can be the control head or a problem with the door itself being jammed but the motor is the more likely cause.
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Monday, October 20th, 2014 AT 2:19 AM

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