1999 Chevy Astro

TINAPOTTER24

MEMBER
1999 CHEVROLET ASTRO

Heater problem
1999 Chevy Astro 6 cyl Four Wheel Drive Automatic

the ac/heat will only come through the defrost vent. How would I fix that? Thanks

Thursday, January 7th, 2010 AT 10:49 AM

1 Reply

JDL

MECHANIC
16,098 POSTS

Welcome to the forum. If the mode actuators are vacuum controlled, I'd check the vacuum source. Some makes and models, if the vacuum source is lost, the system will default to defrost mode.

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