GFCI master works but others in chain aren’t
I can't buy that the GFCI in the garage is powering circuits in your kitchen. Kitchen receptacles are usually powered by small appliance circuits which are 20A and there must be at least 2 of these in the Kitchen/Nook/Dining area. NEC Article 220.52 (A). This is actually in my 1965 code book so it has been around for almost every dwelling in the US. These circuits by code are separate from any other circuits.

I would look for a different circuit breaker or a GFCI powering the receptacles in the kitchen. If it isn't a breaker look for GFCI receptacles that are hidden. Like behind the refrigerator. 

Good luck.