Noise,? Compressor or fan, ge fridge

Noise,? Compressor or fan, ge fridge This noise from my ge profile arctica fridge is driving me crazy, at first it was a hard clump clump, or knock knock noise that I believe is the compressor. But now it's a constant knock knock noise that sounds like the fan in the back, condenser fan, is hitting something. It's not, I took the cover off to see. Is this just the condenser? Finally going out?