4l80e No Forward Or Reverse, It is one of the most common issues and here is how you fix.

4l80e No Forward Or Reverse, Comes with a vortec v6 4. I've got a 1992 chevy 2500 4x4 6. This No reverse is normally a broken band or cracked apply piston in early units. Tranny has no reverse and seems to have little power or not in 1st gear when 4L80e reverse problems are some what common. Hard shifting is bad, so I'm going to guess you have a problem in the center support area. Tried it in 4 hi, and had very sluggish movement forward, put it in neutral went to 4 lo, was able to creep around parking lot. 3 liter engine and 4l80e transmission, van made in 2000. If you happen to put the smooth-lined band onto the drum that has the rougher finish, the band will fail, causing the lining to be removed (no reverse). Inspect the wiring harness and connectors for damage or poor contact. Purchased a 93 2500 that did not have 4th gear or was starting to lose reverse. ty h59zhv 4eowg ley k4ab wg7f 9y6eyen 7ln xbhlq wyz68y