Broke vents?

JIMMYEDWRD

MEMBER
1995 CHEVROLET ASTRO
6 CYL
2WD
AUTOMATIC
250,000 MILES

My vents arnt working only the defrost one in the dash is working

Wednesday, November 17th, 2010 AT 3:02 PM

3 Replies

ERNEST CLARK

MECHANIC
1,730 POSTS

Inside of your HVAC unit are vent doors along with vacuum lines and a block of vacuum solenoids.

Your issue lies with one of these components. The only way to check is to remove the unit and check. If you're interested in doing this yourself, let me know and I'll walk you through it. If you just need advise for dealing with a shop, I can help with that also.

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Wednesday, November 17th, 2010 AT 3:05 PM

RASMATAZ

MECHANIC
75,992 POSTS

To Get to the problem you have to open the dash up-and investigate the doors-air mix/blend/mode doors, vacuum and actautors, could als be the HVAC control module

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Wednesday, November 17th, 2010 AT 3:06 PM

COURTROOM74

MEMBER
8 POSTS

This is for Ernest Clark's response - I think I have a similar problem except that the air flow **** when turn to defrog (windshild)/heat(bottom), no much air is flow through the bottom. I feel some warm air but it looks like it's "leaking" out from the compartment insteda of beng "blow" through. I would like to get a step-by-step instruction on how to solve this issue. Thanks.

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Friday, December 31st, 2010 AT 12:19 PM