I doubt anyone could blame a solenoid pack in regards to grinding on engine shutoff.
They do make noise sometimes on initial engagement but I doubt you would hear a RFE since it's in the pan. The 41TE used to cause a noise like dragging your finger across the teeth of a comb but that solenoid module was external.

I don't see where you checked for cooler flow to see if the pump is working properly.
I don't see where you checked to see if the drivetrain is ok - an AWD has a module that can fail and cause a no-drive condition.
If there is no cooler flow and no line pressure you need to drop the trans and check the regulator and tc control valves.

Last edited by Transman; 12/11/17 01:59 PM.