LEMON Manuals: Even more car manuals for everyone
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 >> Removal Procedure

Removal 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.
IMPORTANT: Cap or tape the open evaporator inlet and outlet tubes immediately in order to prevent system contamination.
    Fig 1: View Of Heater Hoses & Evaporator Inlet/Outlet Tube
    GM1547627Courtesy of GENERAL MOTORS CORP.
  1. Recover the refrigerant from the air conditioning (A/C) system. Refer to Refrigerant Recovery and Recharging .
  2. Reposition the heater hoses for clearance, if necessary.
  3. Remove the evaporator tube block to the thermal expansion valve (TXV) nut.
  4. Disconnect the evaporator inlet and outlet tube block from the TXV.
  5. Remove the evaporator inlet tube from the outlet tube.
  6. Remove and discard the sealing washers.
  7. Cap or tape off the evaporator inlet and outlet tubes.
    8. Fig 2: View Of TXV
    GM791147Courtesy of GENERAL MOTORS CORP.
  8. Remove the TXV to evaporator bolts.
  9. Remove the TXV from the evaporator core.
  10. Remove and discard the TXV sealing washers.
scientia non olet · About LEMON Manuals