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Ask Your Question1996 Cadillac DeVille
Question: Noise on 1st startup of the day
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Answer #1
Bret Bodas March 10, 2010, 18:03Reply
MasterSounds like one of the vacuum door motors in the climate control system is closing when the vacuum is supplied from the engine. The system may have a small leak that is causing the door to open up when the engine is turned off.
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