Truck doesn’t change gears smoothly

[Zocaid]

(02-04-2024 )tree98 Wrote:  Maybe it's operator error

I would think that too and I went through thinking it’s me but every other truck I drive is smooth.

My truck Volvo (Cummins cm870) with an eaton 10 spd will not “fall” into gear. It either a. goes in perfect B. goes in and jerks really bad or C. Grinds like a normal missed gear. I have never been able to “tickle” it into gear while the rpm’s are coming down and that’s with 2 motors and 2 transmissions. Could this possibly be shift tower related or is it more ECM/tune related? I’ve changed out pretty much everything on the truck but ECM, wiring harness, CAC, shift tower and a few sensors.