Express 1500 RWD V8-5.3L VIN T (2004)
Shift Indicator: Description and Operation
PRNDL DISPLAY
The IPC displays the selected gear position as determined by the PCM. The IPC receives a class 2 message indicating the gear position. The PRNDL
display blanks when the following conditions occur:
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The PCM detects a malfunction in the transmission range switch circuit.
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An invalid PRNDL position is received.
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The IPC detects a loss of class 2 communications with the PCM.
