All other lights work ok. No obd right now. Getting tail light message on display. After Market clear lens. Replaced bulbs from dealer a few hours ago thinking this was problem. Started replacing right side first, looks like bulb ok to me but replaced anyway. Started car pulled ebrake and put in reverse before attaching. Still not working. Checked for voltage at bulb and at harness to light assembly. No voltage at reverse light. Could it be LCM?