GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 39400-A Halogen Leak Detector

Removal Procedure

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

  2. Object Number: 612568  Size: SH
  3. Remove the auxiliary A/C evaporator tubes (3) from the condenser tube (2) and the accumulator (5).
  4. Loosen the right front wheelhouse to gain access to the clamp behind the wheelhouse.
  5. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.
  6. Remove the right assist step. Refer to Assist Step Replacement.
  7. Remove the front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Right Side.
  8. Remove the rear wheelhouse liner. Refer to Rear Wheelhouse Panel Liner Replacement.

  9. Object Number: 691871  Size: SH
  10. Remove the retaining nut (2) and the auxiliary A/C evaporator tubes (3) from the auxiliary HVAC module.

  11. Object Number: 691870  Size: SH
  12. Remove the heater/A/C tubes retaining nut (4) from the stud (1) at the frame (6).
  13. Remove the auxiliary A/C evaporator tubes (3) from the clamps (5).
  14. Remove the auxiliary A/C evaporator tubes from the vehicle.

Installation Procedure

Note: The replacement A/C and heater pipes are shipped in two sections and spliced together upon installation. Refer to Auxiliary Heater and Air Conditioning Pipe Repair.

  1. Install the auxiliary A/C evaporator tubes to the vehicle.

  2. Object Number: 691870  Size: SH
  3. Install the auxiliary A/C evaporator tubes (3) to the clamps (5).
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the heater/A/C tubes retaining nut (4) to the stud (1) at the frame (6) and tighten to 7 N·m (62 lb in).

  6. Object Number: 691871  Size: SH
  7. Install the auxiliary A/C evaporator tubes (2, 3) and the retaining nut to the auxiliary HVAC module and tighten to 16 N·m (12 lb ft).
  8. Lower the vehicle.
  9. Install the rear wheelhouse liner. Refer to Rear Wheelhouse Panel Liner Replacement.
  10. Install the right assist step. Refer to Assist Step Replacement.
  11. Install the front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Right Side.

  12. Object Number: 612568  Size: SH
  13. Install the auxiliary A/C evaporator tubes (3) to the condenser tube (2) and the accumulator (5) using the nuts and tighten to 16 N·m (12 lb ft).
  14. Recharge the refrigerant to the system. Refer to Refrigerant Recovery and Recharging.
  15. Leak test the fittings of the component using the J 39400-A .