AIR CONDITION

  • Tiny
  • Racerx7533
  • 1998 GMC C2500
  • V8
  • 2WD
  • 21,000 miles

1998 GMC Sierra. Air condition fan sounds like the fan is running strong but not bowing hard out of the vents?

Saturday, July 23rd, 2011 AT 9:25 PM

4 Answers

  • Tiny
  • rasmataz
  • Member

Check and test the air blend door/actuator

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Saturday, July 23rd, 2011 AT 9:47 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 19,802 posts

Is it coming out the defrost instead?

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Saturday, July 23rd, 2011 AT 10:49 PM
  • Tiny
  • Racerx7533
  • Member

Yes it's coming out of the defrost also!

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Sunday, July 24th, 2011 AT 8:28 AM
  • Tiny
  • Wrenchtech
  • Expert
  • 19,802 posts

That means you're having a problem with the mode door actuator mechanism. It's located on the left end of the HVAC housing. Check it while the system is running. It could just be stuck or bound up.

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Sunday, July 24th, 2011 AT 11:38 AM

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