Vibrating noises are generally caused by loose parts (such as loose condenser coils or compressor "tubing rattle") or rollers and feet that sit unevenly on the floor.
Look for any part that is loose. Then remove the bottom trim piece by lifting it off its supports, and check the feet at the front of the unit. If necessary, turn the adjustable feet up or down so they contact the floor squarely.Leaking under a refrigerator may be caused by a condensation tube that doesn't drain into a pan or by a clogged freezer drain. More about refrigerator and freezer problems and repairs:
Refrigerator and Freezer Troubleshooting and RepairsHow to Clean Refrigerator CoilsHow to Thaw an IcemakerIcemaker Doesn't Make IceRefrigerator Cools Poorly or Runs ConstantlyRefrigerator Defrosts ImproperlyRefrigerator Doesn't RunRefrigerator Freezes Foods or Icemaker Doesn't Shut OffRefrigerator Light Stays On When Door Is ClosedRefrigerator Runs But Doesn't Cool