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Home › Oldsmobile › 1991 › Toronado Base › Repair and Diagnosis › Engine Performance › System › Engine Controls - Tests W/Codes - Pcm/BCM › Flow Charts For ECM/Pcm Codes: EO13 To EO69 › Code EO31, Park/Neutral Switch Circuit › 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.
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