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Q: No ac through the dash vents on 1998 Cadillac Seville SLS

There is no ac coming through the dash vents. It comes through the bottom and defroster vents.
No codes showing. Is it possible it could be above the glove box. Can't get the glove box out, is there a valve there. Also someone mentioned a vacumn above the gas pedal?
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Replace, at least remove, Ac mode acutuator and see if it is getting jammed on the door levers or if the actuator is dead. The parts less than $80 on line. Have fun.
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