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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 78 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Evaporator Tube Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.8L or Air Cleaner Assembly Replacement in Engine Controls - 3.6L.
  3. Disconnect the electrical connector from the brake fluid level sensor.
  4. Remove the master cylinder mounting nuts.
  5. Remove the master cylinder from the brake booster and position aside.
  6. Remove the brake pressure modulator valve bracket. Refer to Brake Pressure Modulator Valve (BPMV) Bracket Replacement in Antilock Brake System.
    7. Fig 1: Removing A/C Line Coupling & Dehydrator Mounting Bolt (3.8L)
    GM1204147Courtesy of GENERAL MOTORS CORP.
  7. Remove the A/C line coupling from the evaporator tube to receiver dehydrator tube (1). Refer to A/C Line/Tube Connector Removal/Replacement .
  8. Remove the receiver dehydrator mounting bolt (2).
  9. Disconnect the receiver dehydrator from the evaporator tube.
  10. Remove the block fitting nut that secures the evaporator tube to the A/C compressor hose assembly.
  11. Disconnect the evaporator tube from the A/C compressor hose assembly.
    12. Fig 2: Evaporator Tube On The Left Fender Rail
    GM1117979Courtesy of GENERAL MOTORS CORP.
  12. Remove the block fitting nut that secures the evaporator tube to the thermostatic expansion valve (TXV).
  13. Disconnect the evaporator tube from the TXV.
  14. Remove the evaporator tube from the support clip on the left fender rail.
  15. Disconnect the wire harness electrical connector from the A/C pressure sensor.
  16. Remove the evaporator tube from the vehicle.
    17. Fig 3: A/C Refrigerant Pressure Sensor
    GM282279Courtesy of GENERAL MOTORS CORP.
  17. Remove the A/C pressure sensor.
  18. Remove and discard the O-ring seals and seal washers.
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