Re: Did shift solenoid & Transgo hd2 kit, flash or dont have to?
Internal leaks should have been accompanied with a high CVI for the respective clutch pack, but also a worn clutch pack should give a high CVI.
You didn't see any strange material in the pan when you changed the fluid? Also no burnt smell to the fluid? Slipping clutch packs will quickly cause the fluid to get a burned smell.
This is quite a strange problem. I just wonder what can be wrong in the transmission when the CVI's and line pressure are in specs. It could eventually be a problem with the TCM