GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Cobalt 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Air Conditioning Refrigerant Service Valve Core Replacement

Special Tools

    • J 39400-A Halogen Leak Detector
    • J 46246 Valve Core Tool

Removal Procedure
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.

    2. Object Number: 877654 Size: SH
  2. Remove the service port valve core using J 46246 or equivalent.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 877654 Size: SH
  1. Install the service port valve core using J 46246 or equivalent.

    2. Tighten
    Tighten the service port valve core to 2.5 N·m (22 lb in).

  2. Evacuate and charge the refrigerant system. Refer to Refrigerant Recovery and Recharging.
  3. Leak test the fittings using the J 39400-A .