Air condition

1998 GMC C2500
21,000 MILES • V8 • 2WD
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RACERX7533
  • MEMBER
  • 2 POSTS
1998 GMC Sierra. Air condition fan sounds like the fan is running strong but not bowing hard out of the vents?
Jul 23, 2011 at 2:25 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check and test the air blend door/actuator
Jul 23, 2011 at 2:47 PM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
Is it coming out the defrost instead?
Jul 23, 2011 at 3:49 PM
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RACERX7533
  • MEMBER
  • 2 POSTS
Yes it's coming out of the defrost also!
Jul 24, 2011 at 1:28 AM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 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.
Jul 24, 2011 at 4:38 AM
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