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Cadillac
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1993
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Seville Base
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Tests W/Codes - Pcm
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Pcm Code Charts
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Pcm Code P023 - Ignition Control Circuit Problem
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Failure Conditions (Crank)
Failure Conditions (Crank)
No ignition pulses detected in circuit No. 423.