Popping noise in dash passenger side

Tiny
DWGBGRED
  • MEMBER
  • 1999 CHEVROLET SILVERADO
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
I have replaced the blend door actuator in belief that that was the problem it didn't pop for two day then started popping again. When I put it on defrost there's a slight popping noise. When in defrost it seems to only be blowing air on the left side of the vent. How can I fix this?
Thursday, October 8th, 2015 AT 8:27 AM

2 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
One of the air doors could be jammed up or broken. The mode actuator should be visible from under the left side of the dash but to really look into the problem, the dash is going to have to come out.
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Thursday, October 8th, 2015 AT 9:37 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Right idea wrong actuator. You need the mode one see pic also it may have a cable problem if one attached or not. The door may be sticking so check that as well.
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Thursday, October 8th, 2015 AT 9:40 AM

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