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GMC
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1994
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Forward Control 6.5 Y, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Tests W/O Codes - 6.5L Diesel
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Symptoms
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Fuel Leaks With No Other Engine Malfunction
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Possible Cause
Possible Cause
Loose or broken fuel line or connection.
Internal seal leak in injection pump.