No ventilation control
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From: Jersey Shore on the Right
No ventilation control
I have a 99 Expy and the manual vent control **** appears not to be working any longer. Air only comes out the defrost vents regardless of the **** position. Off does work, nothing from panel or floor. Comments please before I call the dealer with my issue.
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Senior User
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From: Jersey Shore on the Right
No ventilation control
If it's a vacuum hose should I get a check engine light / code and some rough idle? Any idea on accessing the control switch - from the glove compartment? It does turn off but will not direct air flow to anywhere except the windshield.
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From: Jersey Shore on the Right
No ventilation control
OK. I can see vac hoses and a cable by looking past the cup holder or the power outlet. How does the control panel come off? I'm handy but have no manual. Can you suggest any reference literature? Thanks
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From: Jersey Shore on the Right
No ventilation control
Turns out the problem was the ventilation control **** had shorted out - an $18.00 part. Did I mention the $250.00 labor to diagnose that. After eliminating electrical and vacuum issues the dealer dug into the dashboard to determine the vent control didn't actuate was it was supposed to. Repacing that part solved the problem. In hindsight mabe that should have been replaced earlier in the process. I like my Expy, but quality wise it's a piece of crap. 
