What was found
(CAN) WHILE IN CRUISE FLIGHT THE PILOT NOTED A 2 LED DIFFERENCE BETWEEN LT AND RT FUEL INDICATORS. A FEW MINUTES LATER THE RT BOOST PUMP LT INDICATOR CAME ON. THE LT REMAIN ON FOR THE DURATION OF THE FLIGHT AND THE FUEL IMBALANCE REMAINED. ON THE GROUND THE FUEL BOOST PUMPS WERE TESTED MANUALLY. THE RT BOOST PUMP INDICATED NORMALLY BUT NO SOUND OF THE PUMP RUNNING WAS NOTED. THE FUEL PUMP WAS REPLACED AND THE SYSTEM TESTED SERVICEABLE. NO FURTHER ACTION WAS REQUIRED.