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1990 Chevrolet ASTRO 4.3L Vacuum
Posted to GM HVAC on 7/20/1998

This van deflects all airflow to defroster under moderate acceleration. We have checked all the hoses and vacuum servos all hold vacuum. The vacuum resivour and check valve all work. I installed a vacuum gauge in line to the feed to the control head and ha...

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Message Closed w/FIX

car Vehicle Data

1990 Chevrolet ASTRO

VIN 1GNDM15Z1L
Engine4.3 L / 6 cyl
Message Closed w/FIX

car Vehicle Data

1990 Chevrolet ASTRO

VIN 1GNDM15Z1L
Engine4.3 L / 6 cyl