Operation CHARM
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GMC Truck
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1987
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Jimmy Full Size V8-305 5.0L
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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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Oil Out of the Vent
Oil Out of the Vent
1. Chamfer in oil pump body rotor pocket too large.
2. T.V. limit valve stuck.