What is happening is when I place the zone control to MAX A/C, A/C, Or Vent to panel it blows air good, but occasionally it will stop blowing out the panel vents and out the defrost vent, or floor vent. I hear like a door open when I first turn it on but sometimes it closes and sends the cold air out through the defrost or the floor. What can I do to fix this problem?My 1997 Chevy Blazer has an issue with the A/C/vent zone control what can I do to fix this?
I'd get under the dash and check out the blend door and it's operation.My 1997 Chevy Blazer has an issue with the A/C/vent zone control what can I do to fix this?
sounds like a vaccum leak. if your doors are vaccum operated there will be a small line entering the heater case under the hood at the firewall it may be near the heater hoses or a/c lines. find it and see if it has good vaccum.
if there is no vaccum hose the doors are operated by electric motors and you may need help from a automotive shop!
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