2005 GMC Yukon front fan blower intermiitent

Tiny
JOSEKING
  • MEMBER
  • 2005 GMC YUKON
  • V8
  • 2WD
  • AUTOMATIC
  • 45,000 MILES
Rear a/c blows strong. Front passenger/driver hardly ever works. I have replaced compressor relay switch and pulled all relevant CB's with no joy. My research shows this problem to be a common one and a compelling argument could be made that this is an design flaw.
Wednesday, May 12th, 2010 AT 8:23 PM

1 Reply

Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
They have issues with blend doors not working.
Those actuators have small plastic gears inside and 1 chipped tooth or small crack leads to erratic operation. If you remove the actuator take the darn thing apart, and at the same time you can manually work the door to see if your symptoms change. But before dissassembling, discconnect the battery for a half hour, this will reset the bend door operation. However, depending on your radio, you may need a code to reset the radio.
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Monday, May 17th, 2010 AT 5:32 AM

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