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GMC
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1990
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Safari Van M 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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Torque Converter Clutch
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Testing and Inspection
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Symptom Related Diagnostic Procedures
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No Torque Converter Clutch Release
No Torque Converter Clutch Release
1.
Converter clutch apply valve stuck in the open position.
2.
O-ring or check ball in the end of the
turbine shaft
damaged.
3.
Internal converter damage.