I wanted to update once again and say that my alerts are back on the dash. I popped the covers off and checked the angle, which was still the same, so I figured the truck angle wasn't level when I originally set it. Maybe close, but not level. So, I leveled my truck by using a 4' level on the bed rails and jacked up the rear until I was level. The inclinometer registered -1.4, so I adjusted to -1.0 again.
After starting the truck to put in the garage, the light was off. YAY. Drove for a week and the light came on again while driving in the rain. So, I found level ground with that 4' level and adjusted again! I haven't driven it yet, but I may go the dealer if it doesn't go away this weekend. I might actually have a bad module.