As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH FLT 2041 THE CREW REPORTED ILS ERRATIC ON BOTH SIDES. F/O'S AND CAPTAINS SHOWS A/C ON LOCALIZER IS OFF TO THE RIGHT FROM RUNWAY CENTERLINE. THE AIRCRAFT DIVERTED INTO GRB AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE NR 2 VOR/ILS ANTENNA AND OPERATIONAL CHECKS WERE GOOD.