GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 297225  Size: SH
  1. Disassemble the A/C refrigerant components. Refer to the appropriate repair procedure:
  2. • For compression style fittings, use a back up wrench on the fitting (2) and loosen the fitting nut (1).
    • For banjo style fittings, remove the bolt retaining the banjo type fitting.
  3. Remove the O-ring seal from the A/C refrigerant component.
  4. Inspect the O-ring seal for signs of damage to help determine the root cause of the failure.
  5. Inspect the A/C refrigerant components for damage or burrs. Repair if necessary.
  6. Important: Cap or tape the open A/C refrigerant components immediately to prevent system contamination.

  7. Cap or tape the A/C refrigerant components.
  8. Discard the O-ring seal.

Installation Procedure

  1. Inspect the new O-ring seal for any sign or cracks, cuts, or damage. Replace if necessary.
  2. Remove the cap or tape from the A/C refrigerant components.
  3. Using a lint-free clean, dry cloth, carefully clean the sealing surfaces of the A/C refrigerant components.
  4. Important: DO NOT allow any of the mineral base 525 viscosity refrigerant oil on the new O-ring seal to enter the refrigerant system.

  5. Lightly coat the new O-ring seal with mineral base 525 viscosity refrigerant oil.
  6. Important: DO NOT reuse O-ring seals.

  7. Carefully slide the new O-ring seal onto the A/C refrigerant component.

  8. Object Number: 662315  Size: SH
  9. The O-ring seal must be fully seated.

  10. Object Number: 297225  Size: SH
  11. Assemble the A/C components.
  12. Refer to the appropriate repair procedure:

    • For compression style fittings, use a back up wrench on the fitting (2) and tighten the fitting nut (1) to specification.
    • For banjo style fittings, install the bolt retaining the banjo type fitting and tighten to specification.