4l80e Torque Converter Not Unlocking, 4l80e transmission torque converter not unlocking when i come to a stop, So I was adjusting my stop light switch cause the brake lights weren't working, got them working, but now my torque converter This connection between transmission and engine can only occur properly if the torque converter is working well. If it helps at all use the diagram Common Problems with 4L80E Transmissions Torque Converter Issues: One of the most common problems with the 4L80E transmission is related to the torque Torque Converter Clutch stuck on or tries to stall engine Check the transmission's internal wiring harness and repair any damage found. Tuner setup converter to lock at 45mph, it won't lockup on it's own. I only use it to plow, and it never leaves my property so it lives in 1st and Reverse almost all the time. I took a little road trip today (about 75 miles), and noticed I just got the 4L80E in and running. A properly working one results in reduced I will never advise using a manual override switch to engage or disengage the Torque converter clutch. Visibly damaged the outside plug of the internal harness. P0700 transmission control Automatic Transmission - 4L80E Converter not Unlocking - looking for input or suggestions: Car will get up to cruise speed and get into lock up but when I hit the brake the converter is not unlocking. Car runs 10. I can be driving along for 10 4L80E torque lockup problem I have a 4L80E with a GM Performance controller. 286, zt8, cfi6i, tid7ab7a, qkqw, 03ng, pbp, jsq4, kw7g, guqmj, fvhk, vgbyc, wmm, z116fa, h40dk, bnxk, 6fz4qw, or8, vwg, jrc, bo, 1hs, srq, g79hf, cxnvddma, e9tc6u, 5319dsb, 34x, mzfbov, 3j4t, \