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Driving the other day and the transmission would not shift out of 2ed, came to a stop then accelerated and no 1-2 shift. I stopped again and on acceleration 1-2 shift, very delayed 2-3 shift up and normal 3-4 shift. After next stop no 1-2 up shift and it stayed that way. Checked for codes and there were none. Checked shift cable and it had free movement, transmission fluid full but a little dirty (about 25-30k miles on it, pulling 5th wheel most of the time). I pulled the transmission relay and drove around the block in limp home mode and it drove fine. Three codes were set from pulling the relay out but that was to be expected but still no codes for governor solenoid or the transducer. With no 1-2 up shift and no codes the PCM might not be getting a signal from the transmission output speed sensor to know that the truck is moving. So before I put the pressure gauges on I replaced the speed sensor. The sensor cost $17 and removed and installed in less than 5 minutes with a 1" deep socket (have a pan to catch the fluid that comes out). Road tested and all shift points are back to normal. I have since serviced the transmission adjusted the bands. A little fine metal on the magnet and nothing else. One other thing I've noticed is when the truck has sat over night it will take 5-8 seconds for engagement when shifted into drive. I'm thinking torque convertor drain back. The Transmission mechanic say that's normal for a 47RE but I don't remember it taking that long before. What say you? How long does yours take to engage after sitting over night or longer?