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2000 Chevy S-10 Vent to defrost

Tiny
LTURNER287
  • MEMBER
  • 2000 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 82,000 MILES
The heat and the air is totally adjustible. Hot and cold.
But it will not move from the vent to the defrost position.
Now more air coming from the vent than the defrost. Moving the knob from defrost to ac it will not change. Happen in the winter. Florida
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Thursday, June 24th, 2010 AT 2:42 PM

1 Reply

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Hello and thanks for donating

often when this occurs, it is a failed blend door actuator that prevents the modes from changing. First you will want to check for bad vacuum lines though. A common issue with this vehicle is a rotten/bad vacuum line on the resevoir under hood. It is the black ball looking item on the driver side, by the hood hinge.
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Friday, June 25th, 2010 AT 12:54 PM

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