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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 222 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Thermal Expansion Valve Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of TXV
    GM791147Courtesy of GENERAL MOTORS CORP.
  1. Install NEW sealing washers onto the evaporator core.
  2. Install the TXV to the evaporator core.
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the TXV to evaporator bolts.

    Tighten:  Tighten the bolts to 3.2 N.m (28 lb in).

    4. Fig 2: View Of Heater Hoses & Evaporator Inlet/Outlet Tube
    GM1547627Courtesy of GENERAL MOTORS CORP.
  4. Remove the caps or tape from the evaporator inlet and outlet tubes.
  5. Install NEW sealing washers onto the inlet and outlet tubes.
  6. Install the evaporator inlet tube to the outlet tube.
  7. Connect the evaporator inlet and outlet tube block to the TXV.
  8. Install the evaporator tube block to the TXV nut.

    Tighten:  Tighten the bolts to 16 N.m (12 lb ft).

  9. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  10. Leak test the fittings using the J 39400-A  .
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