What was found
CLE FLIGHT 2793 - THE CREW REPORTED MULTIPLE WARNINGS DURING CLIMB E1 FUEL LO LEVEL, AMBER DASHES ON FUEL TOTAL + TANK 2 FUEL LEVELS, RMU NR 2 BLANK, APU SHUTOFF VALVE CLOSED, AURAL WARNING FLAP FAIL, AUTO PILOT FAIL. THE AIRCRAFT RETURNED TO CLE AND LANDED WITHOUT INCIDENT. ON GROUND, RECEIVED ESS BUS 2 FAIL, STICK SHAKER, AND GUSTLOCK FAIL. MAINTENANCE INSPECTED AND REPLACED CONTACTOR RELAYS KOO80 AND K0016. OPERATIONAL CHECKS OF THE DC DISTRIBUTION WERE GOOD. KO016 P/N 464CC01.