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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 677 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Heater/Vent Module Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the engine coolant.
  2. Reposition the inlet heater hose clamp from the heater core.
  3. Remove the inlet heater hose from the heater core.
  4. Reposition the outlet heater hose clamp from the heater core.
  5. Remove the outlet heater hose from the heater core.
  6. Remove the accumulator. Refer to Accumulator Replacement .
  7. Remove the IP carrier.
  8. Remove the heater/vent module drain hose.
  9. Disconnect the electrical harnesses and the ground connections.
    Fig 1: Disconnecting Electrical Harnesses & Ground Connections
    G01666628Courtesy of GENERAL MOTORS CORP.
  10. Remove the heater/vent module mounting nuts and the screws.
  11. Remove the heater/vent module assembly from the vehicle.
    Fig 2: Heater/Vent Module Assembly
    G01666629Courtesy of GENERAL MOTORS CORP.
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