It started initially with tow/haul flashing and tranny clunking from Park to Reverse to Drive and back to Park. Turned truck off. It would not crank again. Checked codes and got P0113, P0705 and P0706. Checked all relevant fuses I thought may have blown. I’ve replaced the Trans Range Sensor. After that I checked and the reverse lights are not coming on which I’ve read is a symptom of a bad TRS, I just installed a new one. I haven’t put fluid back in yet in case I had to open it back up. Could that prevent cranking? Wouldn’t think so, but idk. Any other ideas?