18+ 4L80E Shift Solenoid Diagram Background. The shift pattern is controlled electronically with two solenoids that recieve a ground signal from the powertrain control module (pcm). Beginning at the start of production for all 1999 model thm 4l80e transmissions, the planetary pinions on both carriers were produced 10% thicker than the.
4l60e Valve Body Bolt Location from dujones1.files.wordpress.com In the 4l80e, max line pressure is when the solenoid is off, the valve and springs set max line pressure. The shift pattern is controlled electronically with two solenoids that recieve a ground signal from the powertrain control module (pcm). I have no harness for this module and no wiring diagram of where that harness is supposed to tie in.
I cut the shift time in half from approx.60 to.30 and they do seem firmer.
I have repaired the 4l80e on my tow truck, i have to do that almost every year, the last time it ran perfectly but when i push the pedal to the metal, it. One of the adx files does seem to show the solenoids correctly, when put in drive, one solenoid fires. Are you facing 4l80e transmission problems? Here is a compiled listing of the most popular topics discussed here at dieselplace.com under the 4l80e/4l60e forum.
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