C 2500 Truck 2WD V8-379 6.2L DSL VIN J FI (1992)
Start of Production Date: (Figure 1)
Starting March 31, 1992 (Julian Date 090) all 1992 HYDRA-MATIC 4L80-E/4L80-EHD Transmissions were built with a new Wiring Harness
Assembly which has an in-line temperature sensor.
Service Procedure:
Transmissions built prior to this date can be serviced with the previous design Sensor. To service the new wiring harness, leave the current sensor in the
previous valve body unconnected. There is no connector for the sensor. To service the previous valve body assembly use the new wiring harness
assembly and the valve body assembly together, available in a service package. New valve body assembly cannot be serviced with previous wiring
harness. Caution: Use care when removing the wiring harness connectors. Broken connectors require a new harness assembly.
Service Parts Information (see illustrations).
