2003 Chevy Silverado

Tiny
FSEWELL
  • 2003 CHEVROLET SILVERADO

I have a 2003 chevy silverado 5.3liter it has 80,000 miles. My question is when I turn on the air it always blows out the defrost. Will not stay where the control knob is. How do I fix this?

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Sunday, September 30th, 2007 AT 7:16 PM

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Tiny
BMRFIXIT
  • EXPERT
  • 19,495 POSTS

Is it electronic if yes
need a motor
If not check you vacuum hoses

good luck

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Sunday, September 30th, 2007 AT 7:47 PM
Tiny
DENNYP
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I think you are having an issue with the mode door actuator. If you have a good scanner, you can compare the mode actuator desired counts to the actual counts. This will tell you if you have an actuator problem.

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Sunday, September 30th, 2007 AT 10:02 PM

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