K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
Vehicle Speed Sensor: Description and Operation
The Vehicle Speed Sensor (VSS) is a permanent magnet signal generator located on the transfer case output shaft housing. The VSS sends an analog
signal proportional to the propeller shaft speed. This signal goes to the Digital Ratio Adapter Controller (DRAC).
