Operation CHARM
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Chevrolet
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1987
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S10/T10 P/U 2WD L4-151 2.5L
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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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3L30 (180/180C) Automatic Transmission
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Harsh 3-2 Coast Downshift
Harsh 3-2 Coast Downshift
1. Low speed downshift timing valve stuck open.