What was found
IAH - FLIGHT 2104 - THE CREW REPORTED WHEN COMMANDED GEAR SW TO UP, GEAR DID NOT RETRACT. TEN TO FIFTEEN SECONDS LATER CREW RECEIVED A LANDING GEAR LEVER DISAGREE MESSAGE ON EICAS, AND THE GEAR RETRACTED, AND EXTENDED NORMALLY. THE AIRCRAFT CONTINUED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE LANDING GEAR SELECTOR LEVER, OPERATIONALLY TESTED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.