Hi guys; I'm stranded in Florida, 1100 miles from home and my transmission is stuck in limp mode, it's showing two codes, P0750, shift solenoid A and P0700, info. I took it to AAMCO because they were within walking distance from where I'm staying. They've had it for 44 days and still haven't found the problem. They've done everything they know to do and it still isn't fixed. They replaced the ECM, twice, the TCM, twice, they checked the shift valve block, electrical and mechanical then replaced it just in case, the speed sensor checked okay, speedometer works, they checked the wiring both physically and electrically. Transmission made no noises and it was working fine when I shut it off the night before, next morning it wouldn't shift. I would have to have to try to drive it home at 35mph. What's left to check?