Replacing O-Ring Seals

Install new GM approved service replacement air conditioning O-rings whenever a joint or fitting is disassembled, except when provided on new components.

Even though an O-ring may look the same, it is extremely important that only recommended service replacement air conditioning O-rings be used or excessive leakage may occur. Always slip the new O-ring onto the flange tube to ensure proper locating and sealing.

Also, prior to installation, lubricate with refrigerant oil and verify that both O-rings and fittings have not been nicked or deformed. Deformed or nicked parts must be replaced. Failure to use the proper service replacement parts and procedures may result in excessive refrigerant leakage.