N182186881 01 - Special Coverage Adjustment. On some vehicles, the evaporator core may become damaged as a result of repeated freeze/thaw cycles without proper drainage of the condensate from the core. A damaged evaporator core may leak refrigerant and result in a loss of air conditioning function. Dealers are to confirm the air conditioning system evaporator core is the source of the refrigerant leak, and replace the core if its sealing is compromised. The repairs will be made at no charge to the customer.