C 3500 Truck 2WD V8-454 7.4L VIN J SFI (1999)
Idle Air Control (IAC) And Throttle Position (TP) Sensor
On the side of the Throttle Body
GMC Workshop Service and Repair Manuals
Throttle Position Sensor|Diagrams >
< Throttle Position Sensor|Specifications|Page 4512
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