My AC works but only blows out the defrost or the bottom it will not switch to the main vents
Dec 13, 2007 at 7:55 AM
1999 Chevy Astro AIR CONDITIOUNING
DAN KARTMAN
- MEMBER
- 3 POSTS
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Most likely a vacuum leak. Vacuum from the engine is what the dash control uses to move the diverter flaps that change the air flow.
I think the Astros had a plastic ball under the hood....hooked to the under side of hood. This is a vacuum reservoir.
I think the Astros had a plastic ball under the hood....hooked to the under side of hood. This is a vacuum reservoir.
Dec 13, 2007 at 6:43 PM