What was found
PROBLEM: DURING CLIMB-OUT ON FLIGHT FROM KDLZ TO KSAV, THE FLIGHT CREW REPORTED THE FOLLOWING DISCREPANCY. "DURING CLIMB OUT, RED ENGINE FIRE WARNING LIGHT ILLUMINATED AFTER LIGHT TURBULENCE ENCOUNTER. NO OTHER INDICATIONS OF FIRE". AS A RESULT THEY DECLARED AN EMERGENCY AND DIVERTED TO KCMH WERE THEY LANDED WITHOUT INCIDENT. RESOLUTION: THE GIO MODULE IN THE MAU WAS FOUND TO BE THE ISSUE. THE GIO MODULE WAS REMOVED AND REPLACED IAW AMM 12-B-31-42-00-00A-920A-A. OPS CHECK GOOD. PERFORMED FIRE/OVERHEAT DETECTION ADJ/TEST IN ACCORDANCE WITH 12-B-26-10-00-00A-903A-A OPS CHECK GOOD NO DEFECTS NOTED.