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Re: 91 Sonoma/ S-15 4.3L TBI, Vacuum line at firewall snapped
To my question on the black hard plastic vacuum line. I believe that vacuum line controls the Heater/AC vents. I am only getting Heat/AC at the Defoster and Floor vents, but nothing from the dash vents.
Last edited by malo boy; 06-28-2017 at 04:00 PM.
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