Hello, I have a 98 blazer, 4L60E, deep pan, with 143k and no rebuilds (engine or tranny)
For some time I have delt with the P1870 Code, but I just kept her in town on light duty (groceries).
I recently found out about teckpacks tcc valve fix, TCC VALVE from Teckpak / Fitzall
and went ahead and got it.
Now I have installed it accordingly, properly, and with a new trans filter and fluid. I believe it is in "limp home mode" now. I am not sure why. After the fix, I drove it around the block and it never shifted, just rev's out searching for a shift. reverse works fine, but D-1st is all the same and Very sluggish, possibly locked in 3rd?
I am wondering if anyone else has tried this fix and gotten simular results, or knowledge of why. Also, I believe there is a way of pegging the tcc valce in place rather than replacing it, which i think works with the same principals as the new valve I have put in.
Do i need to get a new PCW-TCC? Shift solaniod? I am trying to avoid replacing the valve body with the updated one, and replacing the transmission.