2000 GMC Sierra damper

100,000 MILES • V8 • 2WD • AUTOMATIC
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RONDOG14
  • MEMBER
  • 2 POSTS
my pickup vents wont change the ac and heater come out the defroster vents none from the front vents
Nov 4, 2010 at 10:46 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
you'll have to check yoru actuators. they operate where the air goes. they can be vacuum or electric. i'm enclosing a picture to give you an idea where they are and you'll have tocheck to see if they are gettingpower ornot if electric and whether they are getting vacuum to operate.


https://images.2carpros.com/forum/automotive_pictures/406719_actuator_10.jpg

Nov 7, 2010 at 10:23 AM
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RONDOG14
  • MEMBER
  • 2 POSTS
thanks for the reply i really appreciate it i was lost thanks again
Nov 9, 2010 at 8:12 AM
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