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GMC
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1995
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C3500 HD 7.4 N, 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 - Basic Testing - 7.4L
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A-7, Basic Fuel System Checks
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Fuel System Pressure Relief
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Notes
Fuel System Pressure Relief: Notes
CAUTION:
Begin fuel system trouble shooting and diagnosis with fuel system pressure test. Relieve fuel system pressure before disconnecting any components or installing fuel pressure gauge.