Hi all, I recently bought a used 1998 Astro van with the 4L60E trans. At one point while driving it home (long drive) I got a hard shift from time to time and a check engine light. I added some Lucas trans fluid and the problem seemed to get better, but near home I felt the trans freewheel a couple of times. The Check Engine light went out. I borrowed a code scanner and found the typical P1870 code (slipping trans) stored in memory. I then drained enough fluid to get more Lucas fluid in the trans (I'd only gotten 8 oz or so in it before as it was nearly full.)
I have read about a valve fix that involves reaming out a passage and installing an oversize valve. I have also read that you can 'fix' this problem with a shift kit. My question is, should I do those things or just plan to rebuild or replace the trans and install a shift kit then? The van has 126K miles on it.
Thanks,
-Joel.
Disclaimer: Any opinions above are mine and not those of my employer or anyone else.