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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 642 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Heater Pipes Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the battery heat shield. Refer to BATTERY HEAT SHIELD REPLACEMENT in Engine Electrical.
  2. Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
  3. Remove the intake manifold. Refer to INTAKE MANIFOLD REPLACEMENT in Engine Mechanical.
  4. Using the J 38185,  release and reposition the heater inlet and outlet hose clamps.
  5. Separate the heater hoses from heater pipes.
    Fig 1: Separating Heater Hoses From Heater Pipes
    G01418758Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the hose clamp and hose from the RH air injection check valve.
  7. Remove the RH air injection check valve to LH cylinder head bolt.
    Fig 2: Removing RH Air Injection Check Valve
    G01418759Courtesy of GENERAL MOTORS CORP.
  8. Remove the RH air injection check valve to RH cylinder head bolts.
  9. Remove the RH air injection pipe.
  10. Remove the nut retaining the heater pipe bracket to the cowl.
  11. Remove the heater pipe to heater core retaining bolt.

    Important:  Be sure to cap or plug the open heater core to prevent contamination.

  12. Disconnect the heater pipe assembly from the heater core, allow any remaining coolant to drain, discard the seal washers and cap or plug the heater core to prevent contamination.
  13. Remove the heater pipe assembly from the vehicle.
    Fig 3: Removing Heater Pipe Assembly
    G01418760Courtesy of GENERAL MOTORS CORP.
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