What was found
FLT 1123 CLT-GCM - RTF - EXTENDED AIRFRAME VIBRATION ON GEAR RETRACTION. ECAM - L/G NOT LOCKED WHEN RETRACTED / LGCIU 1 FAULT / L/G DOOR DID NOT NOT CLOSE. WHILE AIRBORNE RECEIVED ECAM MESSAGE - ENG 1 APP IDLE ONLY INOP SYSTEM LGCIU1, REVERSER 1, GPWS. CREW RETURNED TO FIELD & ECAM MESSAGE AFTER TOUCHDOWN - GEAR DISAGREE. MAINTENANCE REMOVED AND REPLACED THE LANDING GEAR DOOR SELECTOR VALVE 41GA IAW AIRBUS MAINTENANCE MANUAL 32-31-34 & PROXIMITY SENSOR 30GA IAW AMM 32-31-73. RIGGED NLG DOOR UPLOCK ASSEMBLY IAW AMM 32-31-14-04. ALSO FOUND NLG HARNESS WIRES FOR PROX SENSOR 25GA DETERIORATED - REPLACED WIRES IAW ELECTRICAL STANDARD PRACTICES MANUAL 20-33-11.