If the breaker in the service panel keeps tripping, you probably have an issue with the compressor motor of the freezer drawing too much current. Either that or the circuit is already drawing current for other connected devices and the freezer is causing the current to exceed the amperage rating of the breaker. If it is the gfi that keeps faulting out, then it is an entirely different problem. Even though it is required by code, you should not have your spare freezer on a circuit protected by a gfi. They are notorious for intermittently tripping and leaving you with hundreds of dollars in spoiled food. Unless it trips immediately after being plugged in, there is not much chance that the freezer has a ground fault issue. Use an unprotected outlet or run a new one (standard, unprotected) from the service box.

Tripped circuit breaker
 

I had a smaller freezer that I bought used. Within a year it broke. Instead of buying a new one, I bought a new refrigerator and moved the one I hated out to the garage. I was told you needed a dedicated line for a refrigerator. I put one in when I bought my refrigerator and have not had any problems since

GFCI did trip at first during heavy rains. Problem solved by re-caulking outside electrical outlets. If you're unsure, install a new dedicated plug that's not on a GFCI.

You'll need to put it on a separate circuit without a GFI. I understand this is a code violation. Leaving on vacation and returning a week later to find that a GFI tripped and the garage refrigeration is full of spoiled food is enough to break code, however.

We have a refrigerator, a dorm size we keep drinks in. Never a problem.

Garage Fridge
 

Bought a new fridge 8 years ago and moved the old one into the garage. Best thing I every did. The new one died 3 months ago. Still waiting for the replacement to come.

We have a refrigerator, a dorm size we keep drinks in. Never a problem.

Refrigerators are supposed to have a dedicated breaker and have nothing else on the circuit. End of story

Would this be the voice of experience??😝 Ouch!

We had same problem. Had to have a dedicated outlet installed. No problems since then.

18cu. ft Whirlpool refrigerator in yhe garage since 2005. No problem yet.

A refrigerator in the garage should not trip the breaker. HOWEVER, it is in a GFI receptacle which most likely also feeds your outdoor receptacles. My extension cords for Christmas lighting will when we have a big rain trip the GFI, which is what is supposed to happen. That means the refrigerator will also not have power. Running a dedicated circuit to the frig would solve that problem, or just checking every day that is operating.

We have a refrigerator so far no issues

I had a 200 bottle wine cooler and a freezer in my garage. Never had any problems over the 12 years I was in TV!

Fridge in the garage since 07 and no problems.