2014 Ram 1500, 5.7L hemi, 75K miles. I had a check engine light show up, but perfectly drivable that day. Days after, truck went to limp mode (4th gear). I scanned the codes, all were transmission related (pressure switch, temp sensor, etc). After clearing codes, the one code was P0882 - TCM power input. Looks like a low voltage issue to TCM?

A few days later, I went to put the truck in park. The column shifter felt like it went to park, however the dash indicator light showed reverse. After a bit, something clicked in the ignition switch and it went to reverse. Frustrating since I cannot turn off the truck. See video showing this. Hopefully someone has some insight. Thank you!