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Hot air coming through defroster on top of the dash after replacing actuator

Tiny
CATHY CROWLEY
  • MEMBER
  • 2003 CHEVROLET SILVERADO
  • 6.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 113 MILES
Replaced actuator last night, this morning hot air was coming through defroster on top of dash?
Wednesday, December 7th, 2016 AT 5:15 AM

3 Replies

Tiny
JOHNNYT73
  • MECHANIC
  • 924 POSTS
Which actuator did you replace? These GM trucks have been known to have incredibly annoying HVAC issues. I think there is a recalibration you have to go through when you replace it.
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Wednesday, December 7th, 2016 AT 5:58 AM
Tiny
CATHY CROWLEY
  • MEMBER
  • 1 POST
One on the passenger side. I may have missed the recalibration part. Can anyone tell me how its done?
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Wednesday, December 7th, 2016 AT 6:02 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Pull HVAC fuse inside truck for sixty seconds with key on then reinstall it will reset actuators.
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Wednesday, December 7th, 2016 AT 7:07 AM

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