GM Service Manual Online
For 1990-2009 cars only

Tools Required

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

Removal Procedure

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

  2. Object Number: 931210  Size: SH
  3. Use J 46246 or equivalent to remove the valve core.

Installation Procedure


    Object Number: 931210  Size: SH
  1. Use J 46246 or equivalent to install and tighten the valve core.
  2. Evacuate and charge the A/C system. Refer to Refrigerant Recovery and Recharging .
  3. Important: To prevent loss of refrigerant charge, tighten the cap. Replace the cap if the seal is missing or damaged.

  4. Test the affected A/C fittings for leaks using J 39400-A .