When it comes to tranny filters including 4T65Es, no filter can get rid of the wear metals that wind up
in the PCS solenoids or the shift solenoids which causes tons of shift issues.
Tranny filters at best may filter out clutch plate material - period. But you'll always need one since
they easily load up and restrict suction at the oil pump inlet and create shift issues too.
Wear metals are supper fine (.1 to 10 microns) and can only be caught with magnets, & GM uses the crummiest they can get.
Search "4T65E Magnets" there's a TSB where GM half-admits they did it wrong!
I loaded my 4T65E oil pan inside with lots of magnets to reduce the effect of metals in the ATF
and solenoid problems, works well. Be sure to test fit the pan to see that magnets don't hit anywhere since clearance
is near zero.
The filter has a metal plate intake that's recessed from the bottom of the pan, good place for 4 to 6 magnets!