BOTH occasions were for PM reasons ONLY, 130,000+ miles, with NO performance/shift issues either Before or After the fluid change. I have TWICE drained & refilled by GM6 Sump, with Filter change. I have NOT found anything similar for GM6 Transmission 'Adaptation Reset'. I note that the 4-page pdf you link is from Propulsive Dynamics, a Euro Corp, and is related to the ZF HP19/21 transmission. I might do some more research before I crack on. It took about 20miles (30KM) or so of road and a couple hours or so. I went to the transmission section in INPA and switched between F6 and F7 to go between section showing the gear you are in to the accelerator position % section. I was looking at the computer on INPA looking at the gear indicator and gas pedal % and telling my girlfriend what to do as well as trying to keep count at how many times left we had to go. I would say it is a two person job that is still quite dangerous because involves taking eyes off road to look at speeds, percentage throttle and gear indicators. The shifts are very smooth now as well as downshifts. I have 2006 330i ZF 6 speed transmission and replaced the shift solenoids and rubber sleeves. We just did the adaption clearing and reset last night about 1AM out in one of the less traveled highways away from cities and towns with emergency lights on. When driving along in auto, can I put it into steptronic whilst car is in motion to take it upto 5 th gear to do the relearn or have am I misunderstanding the relearn process

I use Febi ATF in our Audis 6HP and 8HP (the one equiv to green Lifeguard 8). The ZF transmission has always been smooth, unlike our 2007 GM junk. I think Clutch E did not adapt for long while, perhaps I did not perform the driving pattern correctly, but it did later on as indicated by the adapt count in VCDS for Audi. I did that with our Audi 6HP19 (using Ross VCDS) when I changed various gaskets for the valve body and it seemed to have worked - a little smoother than before the adapation drives. I think the transmission relearns the apply pressure and timing for the clutches, and that should result in a smoother shifting transmission.

I have the GM 6L45, and after the INPA reset I also need to do a throttle relearn (depress and release with key-on-engine-off).

Vcds transmission adaptation reset