About 45 minutes into our trip, the transmission felt as though it went into neutral. I had noticed just before that, the alternator had quit charging and the water temp was pretty high. I pulled over and switch one of the coach batteries for the chassis battery and turned around for home. The alt was charging and trans seemed fine on return trip. Found bad connector on alternator and fixed it then went for test drive. Transmission felt erratic, only going up to 2nd gear. It would try to shift into 3rd then drop immediately back into 2nd. The fluid levels were fine.