4l60e no 1st or 4th, ez tcu

[tuffy331]

Line pressure and harness checks out, will be swapping valvebodys, and separator plates.

 

[tuffy331]

Haven't swapped anything yet, but I noticed when I let off the throttle all the way it shifts into 4th, anytime I give it any throttle it goes back into 3rd. If I'm going fast enough I can let off the gas and shift into 4th then shift back into 3rd and get the rpms to raise when going back to 3rd. Noticed the same thing with 1st, sometimes I can get to idle around in 1st but as soon as I touch the throttle it goes into second. Not sure what's going on here. Ecu still says it's in 4th even though it's in 3rd. Going down a hill I can shift into od and it will shift into 4th and I put it back in d and the rpms raises as they should. But any throttle input whatsoever will shift it into 3rd, same with 1st, sometimes I can get it to idle around 1st but whenever I give throttle it goes I to second. Lol

 

[tuffy331]

I had the 4th piston in the servo backwards, now I have 1st and 4th

 

[NickTransmissions]

I had the 4th piston in the servo backwards, now I have 1st and 4th

Ha - glad it was something simple and you figured it out.