Tranny on my 2000 GMC C3500 would work fine until worm, at which point I'd lose overdrive (4th gear) and would get a jerky shift from 1 to 2nd and 2nd to 3rd, I found out my harness plug was leaking, it's not the O-ring it's the plug socket itself on transmission side wicking trans oil through the plug, shorting out connectors. I JB welded the inner side of the plug, leaking stopped BUT did not fix the issue, which actually is caused by ACTUATED FEED LIMIT bore being worn out. To fix it valvebody needs to come out.
Parts needed for this are
Sonnax Transmission Actuator Feed Limit Valve Kit PN: 34200-16K - $42 on Amazon
Reamer Transgo PN: 48-act-tl around $100
While in there might as well replace Lube Valve Sonnax PN: 34200-14k around $60
Also two gaskets along with plastic check balls if balls "bored out" the holes on the gasket.
5 сен 2024
