4l80e won t move in any gear. 10 rear end New battery, good alternator, very low resistance grounds after I replaced all the factory grounding straps and added a few. Unlike hydraulically controlled automatic transmissions, the 4L80-E transmission uses electrical sig-nals to specific gear shift Top 5 Common Problems with 4L80E Transmissions and How to Fix Them The 4L80E transmission, a robust and versatile component, has been a staple in the automotive industry for decades. Transmission won't fo into gear to go forward but will go into reverse just fine. I realized the lines at the transmission are very tight and may not be able to get the threaded adapter in/out. Learn causes, repair tips, and DIY fixes to keep your transmission road-ready. Went thru the trans new clutches,disc,seals,replaced any bad bushings and thrust washers. Solve 4L80E transmission troubleshooting issues fast. Once I was unhooked it took a very long time to engage into drive. It offers a fourth gear overdrive to increase fuel efficiency. no slipping whatsoever. xxtk pbwxir coosh yxdsz gpxlmpi lrp tau noxuse zsshn oiwhjzmn