GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Cobalt 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Air Conditioning Refrigerant Service Valve Core Replacement

Tools Required

    • 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

    Notice: Refer to Fastener Notice 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 .