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Oldsmobile
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1991
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Toronado Base
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Repair and Diagnosis (Single Page)
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Engine Performance
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System
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Engine Controls - Tests W/Codes - Pcm/BCM
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Flow Charts For ECM/Pcm Codes: EO13 To EO69
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Code EO31, Park/Neutral Switch Circuit
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Notes
Code EO31, Park/Neutral Switch Circuit: Notes
NOTE:
Complete diagnosis of Code EO31 for 3.8L (VIN L) E Body vehicles REQUIRES the use of the GM Tech 1 "Scan" tester.