GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 43600 ACR 2000 Air Conditioning Service Center
    • J 39400-A Halogen Leak Detector

Removal Procedure


    Object Number: 896381  Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  3. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls 2.2L or to Air Cleaner Assembly Replacement in Engine Controls 3.0L.

  4. Object Number: 893628  Size: SH
  5. Remove the fastener that secures the evaporator hose assembly clamp at the engine mount area.

  6. Object Number: 892740  Size: SH
  7. Disconnect the electrical connector to the refrigerant pressure sensor.

  8. Object Number: 892706  Size: SH

    Caution: Do not remove hoses or lines before system is fully discharged. System may be under pressure and contact with R134a may cause personal injury.

  9. Remove the nut that secures the evaporator hose assembly to the condenser hose.
  10. Remove the evaporator hose assembly from the condenser hose.
  11. Install the cap on the evaporator hose to prevent dirt and moisture entry.

  12. Object Number: 894225  Size: SH
  13. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  14. Remove the splash shield fasteners.
  15. Remove the splash shield.

  16. Object Number: 892729  Size: SH
  17. Remove the nut that secures the evaporator hose assembly to the suction pipe.
  18. Remove the evaporator hose assembly from the suction pipe.

  19. Object Number: 892741  Size: SH
  20. Remove the bracket clamp that secures the evaporator hose assembly to the horn.

  21. Object Number: 893630  Size: SH
  22. Remove the nut that secures the evaporator hose assembly clamp at the rail.
  23. Lower the vehicle.

  24. Object Number: 892744  Size: SH
  25. Remove the bolt that secures the evaporator hose assembly to the thermal expansion valve (TXV).
  26. Remove the evaporator hose assembly from the TXV.
  27. Install the cap on the TXV to prevent dirt and moisture entry.

  28. Object Number: 893631  Size: SH
  29. Remove the evaporator hose assembly from the clamp at the cowl.
  30. Remove the O2 sensor clip from the evaporator hose assembly.
  31. Remove the nut that secures the harness bracket to the cowl and open the harness clip.

  32. Object Number: 894479  Size: SH
  33. Remove the evaporator hose assembly from the vehicle.

  34. Object Number: 894470  Size: SH
  35. Remove refrigerant pressure switch from the evaporator hose assembly.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 894459  Size: SH
  1. Install the refrigerant pressure switch to the evaporator hose assembly.
  2. Tighten
    Tighten the switch to 7 N·m (62 lb in).


    Object Number: 894479  Size: SH
  3. Position the evaporator hose assembly into vehicle.
  4. • Position the evaporator hose inside of the wiring harness and outside of the fuel lines.
    • Position the evaporator hose rearward of the wiring harness at the front of the dash with the oxygen sensor harness behind the evaporator hose.

    Object Number: 892744  Size: SH
  5. Remove the shipping caps from the TXV and the evaporator hose assembly.
  6. Install new O-rings on the evaporator hose assembly. Refer to O-Ring Replacement .
  7. Position the evaporator hose assembly to the TXV.
  8. Install the bolt that secures the evaporator hose to TXV.
  9. Tighten
    Tighten the bolt to 7 N·m (62 lb in).


    Object Number: 892706  Size: SH
  10. Remove the shipping cap from the evaporator hose assembly and from the condenser hose.
  11. Install a new seal washer to the evaporator hose assembly. Refer to Sealing Washer Replacement .
  12. Install the nut that secures the evaporator hose to the condenser hose.
  13. Tighten
    Tighten the nut to 12 N·m (106 lb in).


    Object Number: 893631  Size: SH
  14. Install the evaporator hose assembly into the clamp at the cowl.
  15. Install the oxygen sensor harness clip onto the evaporator hose assembly.
  16. Close the steel harness clip and install the nut.
  17. Tighten
    Tighten the nut to 6 N·m (53 lb in).


    Object Number: 893628  Size: SH
  18. Install the evaporator hose assembly clamp at the mount area.
  19. Tighten
    Tighten the nut to 5 N·m (44 lb in).


    Object Number: 892729  Size: SH
  20. Raise the vehicle.
  21. Install a new seal washer to the evaporator hose assembly. Refer to Sealing Washer Replacement .
  22. Install the nut that secures the evaporator hose to the suction pipe.
  23. Tighten
    Tighten the nut to 12 N·m (106 lb in).


    Object Number: 892741  Size: SH
  24. Install the nut that secures the evaporator hose assembly clamp to the horn bracket.
  25. Tighten
    Tighten the nut to 10 N·m (89 lb in).


    Object Number: 893630  Size: SH
  26. Install the evaporator hose assembly clamp at the rail and install the nut.
  27. Tighten
    Tighten the nut to 5 N·m (44 lb in).


    Object Number: 894225  Size: SH
  28. Install the lower cradle splash shield (1).
  29. Install the splash shield fasteners.
  30. Tighten
    Tighten the fasteners to 5 N·m (44 lb in).


    Object Number: 892740  Size: SH
  31. Lower the vehicle.
  32. Connect the refrigerant pressure sensor electrical connector.

  33. Object Number: 896381  Size: SH
  34. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls 2.2L or to Air Cleaner Assembly Replacement in Engine Controls 3.0L.
  35. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  36. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  37. Using J 39400-A , leak test the fittings of the component.