Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
The spray-clean will only clean the "outside" of the evaporator. This spray is used for smell caused by condensation that does not drain properly and sits and turns moldy/musty. It is for smell only. It will not help the circulation of the refrigerant and make the system colder. When the evaporator is clogged, this is internal. No spray can cure that.