GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Yukon Denali 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Evaporator Tube Replacement

Evaporator Tube Replacement Non HP2

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Remove the upper radiator air baffle and deflector. Refer to Radiator Air Upper Baffle and Deflector Replacement .
  3. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  4. Remove the surge tank hold down nut and bolt and position aside.

    5. Important: Do not open cooling system.


    Object Number: 385463 Size: SH
  5. Remove the evaporator tube nut from the evaporator.
  6. Disconnect the evaporator tube from the evaporator.
  7. Remove the evaporator tube nut from the auxiliary A/C tube, if equipped.
  8. Disconnect the evaporator tube from the auxiliary A/C tube, if equipped.

    9. Object Number: 363033 Size: SH
  9. Remove the evaporator tube nut from the condenser.
  10. Disconnect the evaporator tube from the condenser.
  11. Remove the evaporator tube from the vehicle.
  12. Discard all of the used sealing washers. Cap all of the open connections.

Installation Procedure
  1. Connect the evaporator tube to the condenser using new sealing washers. Refer to Sealing Washer Replacement .

    2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 363033 Size: SH
  2. Install the evaporator tube nut to the condenser.

    3. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  3. Connect the evaporator tube to the auxiliary A/C tube using new sealing washers, if equipped. Refer to Sealing Washer Replacement .
  4. Install the evaporator tube nut to the auxiliary A/C tube, if equipped.

    5. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  5. Install the evaporator tube to the evaporator.

    6. Object Number: 385463 Size: SH
  6. Install the evaporator tube nut to the evaporator.

    7. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  7. Install the surge tank hold down nut and bolt and position aside.
  8. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  9. Install the upper radiator air baffle and deflector. Refer to Radiator Air Upper Baffle and Deflector Replacement .
  10. Evacuate and recharge the system. Refer to Refrigerant Recovery and Recharging .
  11. Leak test the fittings of the components using the J 39400-A .