K 1500 Suburban 4WD V8-5.7L VIN R (1997)
Shift Indicator: Description and Operation
Circut Description
The PRNDL Indicator indicates the gear selection for Automatic Transmissions. The PRNDL Indicator receives coded input through four wires from the
Transmission Range Selector (part of the Park/Neutral Position Switch). Depending upon which combination of the four wires to the PRNDL Indicator
are grounded, a gear selection indication light emitting diode (LED), e.g. Reverse (R), is illuminated. The indications are separate from the
Transmission's inputs to the Vehicle Control System.
