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GMC Truck
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1989
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R 3500 P/U 2WD V8-350 5.7L
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Repair and Diagnosis
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Transmission and Drivetrain
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Manual Transmission/Transaxle
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Testing and Inspection
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Diagnosis By Symptom - Muncie 4 (117MM) Speed
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Leaks Lubricant - Muncie 4 (117MM) Speed
Leaks Lubricant - Muncie 4 (117MM) Speed
1.
Lubricant level too high.
2.
Main drive bearing retainer or gasket loose or damaged.
3.
Side cover or gasket loose or damaged.
4.
Rear extension housing seal damaged.
5.
Countershaft loose in case.