As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 2485 - UPON LANDING, GEAR DOOR AMBER LIGHT REMAINED ON AFTER GEAR EXTENSION FOR 20 TO 25 SECONDS. EICAS AMBER GEAR DOOR WARNING SOUNDED AFTER GO-AROUND. GEAR LEFT DOWN UNTIL LANDING. REPLACED UPLOCK PROXIMITY SWITCH. SYSTEM GROUND CHECKED, NORMAL OPERATION. (X)