2015 Silverado. When I use my right turn signal it will blink normally three times and then quick blink with a pop up “Right rear turn indicator failure” even though the lights all work fine on the outside. I’ve replaced the harness and tried new bulbs and nothing has fixed it. Additionally, my rear right brake light does not work even though the bulb is fine, i wasn’t sure if maybe these two issues could be connected. Any help is much appreciated, thank you.