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GMC Truck
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1988
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R 2500 P/U 2WD V8-454 7.4L
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Repair and Diagnosis
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Diagrams
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Connectors
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Left Side View
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Throttle Body Injected (TBI)
Throttle Body Injected (TBI)
Engine Wire Routing:
1
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JUNCTION BLOCK.
2
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WINDSHIELD WIPER MOTOR.
4
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BULKHEAD CONNECTOR.
7
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WATER TEMPERATURE SENSOR.
9
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GROUND.
11
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OIL PRESSURE SWITCH.
29
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COOLANT TEMPERATURE SENSOR.
30
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OIL PRESSURE SENSOR.