Safety first: Unplug the refrigerator before touching moving parts or fans.

Steps:

Identify noise source: Listen carefully: noise from inside the freezer often indicates the evaporator fan motor; noise from the back bottom suggests the condenser fan or compressor.
Check leveling: Ensure the refrigerator is level front-to-back and side-to-side using the adjustable front feet. An unlevel unit can vibrate against cabinets or walls.
Inspect rear compartment: Remove the rear cover and check that the condenser fan motor is secure and free of debris. Remove any objects touching the fan blades.
Secure tubing: Gently move refrigerant lines and condenser coils away from each other or from the cabinet if they are touching and rattling. Use foam pads or clips if provided.
Evaporator fan check: In the freezer, remove the rear panel and inspect the evaporator fan motor. If it is noisy, wobbly, or has play in the shaft, replace it.

Refrigerator makes loud rattling, buzzing, or grinding noises during operation.

Possible Causes