What would cause no defrost when heater works Fine

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Asked by Oct 14, 2015 at 10:14 PM about the 1995 Chevrolet Beretta FWD

Question type: Maintenance & Repair

The heater  works but no defrost

9 Answers

71,265

Vacume module under dash at blower vent assembly,check for vacume leaks,if none are found,may be switch module in control panel is bad.

1 of 1 people found this helpful.

http://www.gmpartsonline.net/parts/1995/Chevrolet/Beretta/Z26/?siteid=215055&vehicleid=182276§ion=HVAC

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Ty so much we will check that, is there more than one?

1 of 1 people found this helpful.

I put that link in a seperate window ti make it easy to hyperlink, TST is spot-on but there are several diagrams there to show you what is happening , example (click for full screen)

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Hubby tore it apart and says there is more than one do you know where I can find a diagram that shows that part?

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We found the one vacuum line located behind the glove box it wasn't that, he says there is more than one according to chiltons

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Same diagram but can't get behind the module to see ty for helping

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Ok is this on drivers side?

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He thinks he figured it out ty sooooo very very much, really appreciate the help :)

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