Is there anybody out there familiar with the innards of this transmission? The C solenoid seems to be fine. It actuates, allowing passage of air, when activated by a 12 volt signal. There do not seem to be any clogged passages. On inspection, the Transfer clutch seems to have normal wear. I don't know what the specs on the clutch pack are, but there is about .036 thousanths clearance in the pack (using a feeler guage set). This transmission was rebuilt about 5,000 miles ago, and I thought that maybe the rebuilder had missed the transfer clutch section. I'm scratching my head at this point. I guess I need to bounce some of this information off someone familiar with working on this transmission. Any information would be appreciated!!! Thanks.