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Home >> Chevrolet >> 2004 >> Optra Base, Automatic >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC Systems >> Repair Instructions >> Heater Core Replacement >> Removal Procedure

Removal Procedure

    Fig 1: Identifying Heater Core/Evaporator Housing Screws
    GM1308297Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  1. Disconnect the negative battery cable.
  2. Remove the instrument panel. Refer to Instrument Panel Assembly Replacement in Instrument Panel, Gauges and Console.
  3. Recover the refrigerant.
  4. Remove the heater/air distributor case assembly. Refer to Air Conditioning and Heater Module Assembly Removal and Installation .
  5. Remove the wiring harness and electrical connectors from the heater/air distributor case assembly.
  6. Remove the screws that connect the heater core housing and the evaporator housing.
    7. Fig 2: View Of Heater/Air Distributor Case Assembly Sponge
    GM1308298Courtesy of GENERAL MOTORS CORP.
  7. Separate the sponge from heater/air distributor case assembly.
    8. Fig 3: View Of Heater Core Housing And Screws
    GM1308304Courtesy of GENERAL MOTORS CORP.
  8. Remove the heater core cover screws from the heater core housing.
  9. Remove the heater core.
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