4l80e Hydraulic Diagram. If you have one of these early transmissions it will be necessary. 800 x 600 px source.
4l80e 2nd printing before after service complaints. Description years qty part no ill no. Because of this we do not provide a wiring harness for it.
Easily convert the 4l80e to full manual control.
Manual shift only transgo. 900 hp or less recommended fluids see full synthetic. The 4l80e uses shift solenoids a and b to control upshifts and downshifts in all forward ranges. 1 91 up t34165ed 4l80e htrk 165j reprogramming kit hi perf hd automatic w complete gear control transgo.