Operation CHARM
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Buick
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1993
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Regal V6-191 3.1L
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Repair and Diagnosis
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Transmission and Drivetrain
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Automatic Transmission/Transaxle
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Testing and Inspection
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Symptom Related Diagnostic Procedures
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4T60-E Automatic Transaxle
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Harsh 2-1 Downshift
Harsh 2-1 Downshift
1. Wrong spacer plate installed.
2. 1-2 accumulator seal cut or damaged.
3. 1-2 accumulator valve stuck.