Fault Codes/Gillette Generators, Inc./57Gillette Generators, Inc.57UnclassifiedCoolingWhat This Code MeansLow coolant levelRelated Gillette Generators, Inc. Fault Codes585655545352Browse all Gillette Generators, Inc. fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for 57 on your specific Gillette Generators, Inc. unit — cited to the OEM manual, not a forum guess.TRY IT FREE