GFI and circuit breaker won't reset
I was running a space heater in the garage to help unfreeze a car and also had my dishwasher running.The circuit breaker tripped and will not go on. I unplugged everything on the line and reset all the GFI's but the one the heater was on will not reset or test. It does nothing. Apparently the dishwasher and the garage outlet, along with all 3 bathrooms are on the same circuit. Is there something we can do at home to remedy this or is it more than a blown GFI?