s80, replaced shift solenoids - still having issues!

raminator01 · Post by **raminator01** » 08 Apr 2013, 05:51

So i decided to replace my shift solenoids because it was to the point where I couldn't drive it any more. I bought the kit the had 2 shift solenoids, pressure manifold, and 2 other solenoids (lock-up and pcm/ecm). I did the install, took it for a drive, and ITS STILL HAVING THE SAME ISSUE. It shifts fine from 1 to 2, but 2-3 it won't switch over unless I back off, but then I try to get back on it and it down shifts to 2, and revs like crazy while also slipping or missing the gear.
I already had the latest trans update, I did that just to be sure it was the shift solenoid and not something computer related. But now I am stuck thinking it might be in the computer. Does anyone have any suggestions on what else it could be? Also I replaced the filter about 3-4k miles ago. Another thing I didnt try was running the Seafoam through it. I've heard positive results from this, I wanted to run it through but the trans got too bad before I had the chance, plus you are only suppose to run it for about 3-400 miles and I didn't know when I had time to tear it apart.

raminator01 · Post by **raminator01** » 08 Apr 2013, 07:29

Also....I have been having issues with the dreaded ABS module. I resoldered the power connector points and it was fine for a while. Then went back again. I bought one off Ebay that was apparently fixed, installed, worked for about a day then started getting message again.
I'm not sure if or how, but I saw someone saying the ABS problem could be linked to the TCM. So that would be a good possiblity if my TCM is crap, which could be causing the trans problem and ABS problem.
So I just take it to the dealer again? I would have thought that last time I had it there they would have figured that out. Or they just went with the obvious, the codes.

raminator01 · Post by **raminator01** » 08 Apr 2013, 07:37

Oh and here is another little issue. If I'm giving it hell and the rpm's are reving up and then I let off completely just before it shifts, it will occassionally freeze the computer. I will lose all power, but it will continue to idle with no throttle response.
What a lovely machine....lord help me. lol

rerobin66 · Post by **rerobin66** » 26 Apr 2013, 23:26

Sorry to hear of your tranny issue. Was having the same problem just before we had our transmission rebuilt. No more transmission problem with replacement.