What was found
SHORTLY AFTER LEVEL OFF, FUEL QUANTITY AND TOTALIZER INDICATED 2500 LBS LOW. DIVERTED AND DURING TAXI, QUANTITIES CAME BACK UP AND WERE WITHIN 200 LBS OF EACH OTHER. DURING THE APPROACH AND DOWNWING FUEL STAYED AT 3500 LBS AND ROSE TO 3700 LBS. THE AIRCRAFT WAS GROUNDED. MAINTENANCE REPLACED THE LEFT AND RIGHT WING FUEL TANKS IAW AMM 28-41-21 AND PERFORMED SATISFACTORY OPERATIONAL CHECK. NO LEAKS NOTED.