At random times my car would shift into the next gear when using the manual shifter. I would notice the gear indicator on the cluster would flash sometimes. Most noticeable from 1st -2nd and I’d see it flash from 1-2 then back to one. I changed all 3 of the pressure switches (oem) and did a 3x3 flush. I also cleaned out the range switch thing(not sure what it’s called but I had a mechanic do everything). Everything shifts smooth when driving and no CEL lights (I had a p0848 before changing the pressure switches)