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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating, Ventilation And Air Conditioning >> Repair Instructions >> Heater Core Replacement - Auxiliary >> Removal Procedure

Removal Procedure

  1. Drain the engine coolant. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
  2. Remove the body side front lower trim panel. Refer to TRIM PANEL REPLACEMENT - BODY SIDE FRONT LOWER in Interior Trim.
  3. Remove the clamps from the auxiliary heater pipes.
  4. Disconnect the auxiliary heater pipes from the auxiliary heater module.
  5. Remove the screws and the band clamp from the right side of the heater core.
  6. Remove the screw and the band clamp from the left side of the heater core.

    Important:  Before removing the auxiliary heater module from the vehicle, be sure to place a protective cover on the floor in order to prevent coolant from leaking onto the carpet.

  7. Remove the heater core from the heater core case.
    Fig 1: Removing Auxiliary Heater Core
    G01645679Courtesy of GENERAL MOTORS CORP.
  8. Remove the seals from the heater core.
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