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Buick
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1991
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LeSabre Custom, 4T60/ME9
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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/O Codes
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Intermittent Trouble Shooting
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Symptom Definition
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Notes
Symptom Definition: Notes
"SERVICE ENGINE SOON" light comes on but does not stay on. A stored code may or may not exist.