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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1486 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Thermal Expansion Valve Replacement (First Design) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: TXV, Bolts & Backing Plate
    GM933678Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Use only lint free cloths to wipe parts. Do not allow any solvent to enter evaporator or hoses.
  1. Remove the protective caps from the evaporator pipe and ensure the seal areas are clean, dry and lint free.
  2. Install new O-rings to the evaporator pipes. Refer to O-Ring Replacement .
  3. Remove the protective caps from the TXV.
  4. Install the TXV and the backing plate to the evaporator pipes.
  5. NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  6. Install the TXV bolts to the backing plate.

    Tighten:  Tighten the bolts to 9 N.m (80 lb in).

  7. Fig 2: Liquid Line, Nut & TXV
    GM931930Courtesy of GENERAL MOTORS CORP.
  8. Remove the protective cap from the liquid line.
  9. Install a new seal washer to the liquid line. Refer to Sealing Washer Replacement .
  10. Install the liquid line to the TXV.
  11. Install the liquid line nut to the TXV.

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

  12. Fig 3: Compressor Hose, Nut & TXV
    GM931940Courtesy of GENERAL MOTORS CORP.
  13. Remove the protective cap from the evaporator outlet hose.
  14. Install a new seal washer to the evaporator outlet hose. Refer to Sealing Washer Replacement .
  15. Install the evaporator outlet hose to the TXV.
  16. Install the evaporator outlet hose nut to the TXV.

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

  17. Fig 4: Refrigerant Low Temperature Sensor & Engine Harness
    GM932516Courtesy of GENERAL MOTORS CORP.
  18. Connect the refrigerant low temperature sensor to the engine harness.
  19. Evacuate and charge the A/C system. Refer to Refrigerant Recovery and Recharging .
  20. Test the affected A/C joints for leaks using J 39400-A  . See Special Tools .