A/T - 4L80E New Design Wiring Harness
TECHNICAL BULLETIN # 148TRANSMISSION: 4L80-E
SUBJECT: NEW WIRING HARNESS
APPLICATION: GM, JAGUAR, ROLLS ROYCE
4L80-E New Design Wiring Harness
The internal transmission wiring harness has been re-designed to incorporate the Transmission Fluid Temperature Sensor into the wiring harness itself. The new harness will fit the early units, but since the temperature sensor is now "in Line" there will be no connector to attach to the screw-in style temperature sensor.
NOTE:
1. All 4L8O-E's must have either the screw-in type or in-line type fluid temperature sensor.
2. If you install the new design harness on an early unit, the screw-in sensor must not be removed leaving an open hole in the valve body. The hole in the valve body must be plugged, or a large mainline pressure leak will result.
2nd Design Harness 8686985