bmw1997
Newbie
97’ Gmc k1500 4l60e
This is my first truck and I can’t afford to bring it into a shop. truck shot the p1870 code few months ago and had hard 1-2 shift, I then replaced TCC Valve with a fitzall part and all shift solenoids. it fixed my problem for a few months then the code showed up again. i replaced the valve body with one from cyclone transmission. when i took off the old separator plate i noticed the 1-2 check ball stuck in the separator plate and the plate was noticeably worn. put the new valve body on and the truck shifts buttery smooth now but i still have the same problem, the 1-2 shift SLAMS after the tranny is hot and or after highway miles for about 15 minutes. the other shifts are firm as well. I need a solution please. Thank you in advance.
(i maybe think it has to do something with a faulty pressure regulator-i’m very young and do the work myself and hoping there is something else i can try to help fix this.)
-ben
This is my first truck and I can’t afford to bring it into a shop. truck shot the p1870 code few months ago and had hard 1-2 shift, I then replaced TCC Valve with a fitzall part and all shift solenoids. it fixed my problem for a few months then the code showed up again. i replaced the valve body with one from cyclone transmission. when i took off the old separator plate i noticed the 1-2 check ball stuck in the separator plate and the plate was noticeably worn. put the new valve body on and the truck shifts buttery smooth now but i still have the same problem, the 1-2 shift SLAMS after the tranny is hot and or after highway miles for about 15 minutes. the other shifts are firm as well. I need a solution please. Thank you in advance.
(i maybe think it has to do something with a faulty pressure regulator-i’m very young and do the work myself and hoping there is something else i can try to help fix this.)
-ben