C 3500 Truck 2WD V8-6.0L VIN U (2001)
Transmission Position Switch/Sensor: Description and Operation
The IPC displays the selected gear position as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the gear position.
The PRNDL display blanks if:
^
The PCM detects a malfunction in the transmission range switch circuit.
^
The IPC receives a class 2 message indicating the park position and the column park switch indicates a position other than park (open input).
^
The IPC detects a loss of class 2 communications with the PCM.
