GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure

  1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .

  2. Object Number: 1066692  Size: SH
  3. Locate the A/C coupling assembly's locking tab access slots (1).

  4. Object Number: 1066688  Size: SH

    Important: When separating the A/C coupling assembly, apply light pressure between the two halves of the coupling to prevent the locking tabs from reengaging.

  5. Carefully insert a small flat bladed screwdriver into the first locking tab access slot and gently lift the locking tab to release the lock.

  6. Object Number: 1066697  Size: SH
  7. Carefully insert a small flat bladed screwdriver into the second locking tab access slot and gently lift the locking tab to release the lock.

  8. Object Number: 1037760  Size: SH
  9. Open and remove the A/C coupling assembly from the A/C refrigerant component.

Installation Procedure


    Object Number: 1066683  Size: SH

    Important: Inspect the A/C coupling assembly locking tabs for damage or wear. Replace the A/C coupler assembly if any conditions exist.

  1. Install the A/C coupling assembly to the A/C refrigerant component.
  2. Important: Ensure that the A/C coupling assembly is latched securely to the A/C refrigerant component.

  3. Close the A/C coupling assembly.
  4. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  5. Leak test the fittings of the component using J 39400-A .