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Home >> Cadillac >> 1999 >> Seville SLS V8-4.6L VIN Y >> Repair and Diagnosis >> Heating and Air Conditioning >> Description and Operation >> Dual Zone A/C System Description >> Operating Modes >> Bi-Level
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Bi-Level





The blower pulls air into the system. The outside air is cooled or heated. The instrument panel and floor outlets deliver the adjusted outside air.
The Instrument Panel Integration Module (IPM) determines the proper air discharge temperatures and the positions the temperature valve accordingly.
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