4l80e Harness Diagram. 54 4l80e stand alone harness. The 4l80e harness uses blue bands instead so you can tell at a glance what transmission the harness fits.
The old internal 4l80e is flawed. This early harness has a problem with leaking fluid at the pass through connector. The circuit must be fused.
This early harness has a problem with leaking fluid at the pass through connector.
4l80 wiring diagram 4l80 wiring diagram the 4l80e transmission has two speed sensors 4l60e only used one. It offers a fourth gear overdrive to increase fuel efficiency. This early harness has a problem with leaking fluid at the pass through connector. You will now have two extra wires these will be used for the 4l80es input speed.