My VX has done something similar before, but when I cleaned and repacked my shift mode selector, it was mo-betta. I would hate it if folks were getting new trannies when that selector is the culprit. Thinking a dealer isn't really gonna give a damn (as if there was an ISUZU dealer even around me anymore).
Rentals? Take it and like it. My STi was in the shop for some "stuff" a couple months ago and my loaner was a KIA Spectra (I couldn't make this !@#$ up). I mean c'mon, from plenty of hp/tq, to absolutely NONE. Needless to say, it stayed parked in my driveway for 5 days and I drove the VX.
Gary Noonan
'01 S/C VX / '18 Forester XT