Get 02 4L80E Wiring Harness Diagram
PNG. Identification of the 4l80e is pretty easy. The 4l60e harnesses have red bands on the tcu and main transmission plugs.
After all that work,,, i think this 2004 harness is already a 80e harness. 4l80e manual shift lsx gmc canyon. 5.7l models will have white/green wire and 7.4l / 8.2l models will have black wire.
The 4l80e is a computer controlled transmission and the successor to the th400.
There are two different starters that were used and the wires are run differently for. After all that work,,, i think this 2004 harness is already a 80e harness. The 4l80e was installed in a lot of different gm trucks and vans, so they are plentiful and easily found at a junkyard. Missing extension/plug that goes to the pedal, o2 sensors, and also the pcm.