I checked the back of my obd port when I bought my truck back in 2019 but this thread got me paranoid seeing the ones behind my glovebox. Checked there and was good. Double checked the steering column and noticed some wires that didn't look stock. Followed them to a box haphazardly zip tied under the steering column. Got real worked up and was ready to get out the wire cutters before I remembered that it was the remote start/alarm unit that I installed myself lol. Glad I didn't have my cutters on me when I found it!