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GMC Truck
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1989
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C 3500 Truck 2WD V8-454 7.4L
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Repair and Diagnosis
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Engine - Oil Cooler Line Leaks
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C2500/3500 5.7L & KC4 & 5A5/5A6 5.7L & KC4 & GT4/GT5 External Cooler
C2500/3500 5.7L & KC4 & 5A5/5A6 5.7L & KC4 & GT4/GT5 External Cooler
Figure No. 6:
