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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1151 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Evaporator Tube Replacement - Inlet (LY7) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.6L.
  2. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .
  3. Remove the wiper motor module. Refer to Wiper Motor Module Replacement in Wipers/Washer Systems.
    4. Fig 1: Locating Evaporator Inlet Tube Clamp Nut
    GM794257Courtesy of GENERAL MOTORS CORP.
  4. Remove the clamp nut from the evaporator inlet tube.
  5. Disconnect the electrical connector from the A/C pressure sensor.
  6. Remove the A/C pressure sensor from the evaporator inlet tube.
    7. Fig 2: View Of Brake Booster
    GM628874Courtesy of GENERAL MOTORS CORP.
  7. Remove the nut that secures the evaporator outlet tube to the TXV.
  8. Disconnect the evaporator outlet tube from the TXV.
  9. Disconnect the evaporator inlet tube from the evaporator outlet tube.
    10. IMPORTANT: Cap or tape the A/C refrigerant components immediately to prevent system contamination.
  10. Cap or tape off the TXV.
    11. Fig 3: Identifying Evaporator Inlet Tube From The Condenser & Bolt
    GM825404Courtesy of GENERAL MOTORS CORP.
  11. Remove the bolt that secures the evaporator inlet tube to the condenser fitting.
  12. Disconnect the evaporator inlet tube from the condenser.
  13. Cap or tape off the condenser.
    14. Fig 4: Evaporator Inlet Tube
    GM651485Courtesy of GENERAL MOTORS CORP.
  14. Remove the bracket bolt from the evaporator outlet tube.
    15. IMPORTANT: Gently lift up on the evaporator outlet tube bracket to allow enough clearance to slide the evaporator inlet tube underneath.
  15. Remove the evaporator inlet tube.
  16. Remove and discard the sealing washers.
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