K 1500 Truck 4WD V6-262 4.3L VIN Z (1993)
Transmission Position Switch/Sensor: Description and Operation
Park/Neutral Switch
NOTE: Because different models and engine applications vary in wire colors, circuit numbers, and pin numbers, the above image is a typical example.
Refer to COMPUTERS AND CONTROL SYSTEMS/SCHEMATIC AND ROUTING DIAGRAMS for specific schematic applications.
PURPOSE:
The PARK/NEUTRAL switch indicates to the computer when the transmission is in PARK or NEUTRAL. This information is used by the computer for
ignition timing, Idle Air Control operation, and transmission Torque Converter Clutch (TCC) operation. DO NOT drive the vehicle with the
PARK/NEUTRAL switch disconnected, since idle quality may be affected.
