GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure

  1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls-3.4L.
  2. Disconnect the cruise control module electrical connector.
  3. Remove cruise control module from the mounting bracket and reposition aside.

  4. Object Number: 826649  Size: SH
  5. Remove the cruise control module mounting bracket bolts.
  6. Remove the cruise control module mounting bracket.
  7. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .

  8. Object Number: 794257  Size: SH
  9. Remove the evaporator inlet tube clamp nut.
  10. Remove the wiper module cover. Refer to Wiper Module Cover Replacement in Wiper/Washer Systems.
  11. Remove the left wiper arm linkage nuts.
  12. Reposition the left wiper arm linkage for access.

  13. Disconnect the electrical connector from the A/C refrigerant pressure sensor.
  14. Remove the A/C refrigerant pressure sensor from the evaporator inlet tube.
  15. Disconnect the vacuum hose from the brake booster and reposition.

  16. Object Number: 628874  Size: SH
  17. Remove the evaporator outlet tube nut at the TXV.
  18. Disconnect the evaporator outlet tube and evaporator inlet tube from the TXV.
  19. Disconnect the evaporator inlet tube from the evaporator outlet tube.
  20. Important: Cap or tape the open A/C refrigerant tube and A/C refrigerant components to prevent system contamination.

  21. Cap or tape the TXV.
  22. Remove the evaporator inlet tube to condenser fitting bolt.
  23. Disconnect the evaporator inlet tube from the condenser.
  24. Cap or tape the condenser.
  25. Disconnect the auxiliary evaporator inlet tube from the evaporator inlet tube.
  26. Cap or tape the auxiliary evaporator inlet tube.
  27. Remove the evaporator outlet tube bracket bolt.
  28. Disconnect the electrical connector on the evaporator outlet tube bracket.
  29. Important: Gently lift up on the evaporator outlet tube bracket to allow enough clearance to slide the evaporator inlet tube underneath.


    Object Number: 687178  Size: SH
  30. Remove the evaporator inlet tube.
  31. Remove and discard the sealing washers and O-ring.

Installation Procedure

  1. Install the new O-ring. Refer to O-Ring Replacement .
  2. Important: Flat washer type seals do not require lubrication.

  3. Install the sealing washers.
  4. Important: Gently lift up on the evaporator outlet tube bracket to allow enough clearance to slide the evaporator inlet tube underneath.


    Object Number: 687178  Size: SH
  5. Install the evaporator inlet tube.
  6. Connect the electrical connector on the evaporator outlet tube bracket.
  7. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  8. Install the evaporator outlet tube bracket bolt.
  9. Tighten
    Tighten the bolt to 5.5 N·m (48.7 lb in).

  10. Remove the cap or tape from the auxiliary evaporator inlet tube.
  11. Connect the auxiliary evaporator inlet tube to the evaporator inlet tube.
  12. Tighten
    Tighten the nut to 27 N·m (20 lb ft).

  13. Remove the cap or tape from the condenser.
  14. Connect the evaporator inlet tube to the condenser.
  15. Install the evaporator inlet tube to condenser fitting bolt.
  16. Tighten
    Tighten the bolt to 16 N·m (12 lb ft).

  17. Remove the cap or tape from the TXV.
  18. Connect the evaporator inlet tube to the evaporator outlet tube.
  19. Connect the evaporator inlet and outlet tubes to the TXV.

  20. Object Number: 628874  Size: SH
  21. Install the evaporator outlet tube to TXV nut.
  22. Tighten
    Tighten the nut to 16 N·m (12 lb ft).


    Object Number: 794257  Size: SH
  23. Install the evaporator inlet tube clamp nut.
  24. Tighten
    Tighten the nut to 3.3 N·m (29 lb in).

  25. Install the A/C refrigerant pressure sensor to the evaporator inlet tube.
  26. Tighten
    Tighten the sensor to 5 N·m (44 lb in).

  27. Connect the A/C refrigerant pressure sensor electrical connector.
  28. Connect the vacuum hose to the brake booster.
  29. Install the left wiper arm linkage.
  30. Install the left wiper arm linkage nuts.
  31. Tighten
    Tighten the nuts to 5 N·m (44 lb in).

  32. Install the wiper module cover. Refer to Wiper Module Cover Replacement in Wipers/Washer Systems.

  33. Object Number: 826649  Size: SH
  34. Install the cruise control module mounting bracket.
  35. Tighten
    Tighten the bolts to 6 N·m (53 lb in).

  36. Install the cruise control module into the mounting bracket.
  37. Connect the cruise control module electrical connector.
  38. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  39. Leak test the fittings of the component using J 39400-A .
  40. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls -3.4L.