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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1602 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Heater Core Replacement (Visteon) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the HVAC module assembly. Refer to HVAC Module Assembly Replacement .
  2. Remove the screws from the heater core cover.
  3. Remove the heater core cover (1) from the HVAC module assembly (2).
    4. Fig 1: Remove Heater Core From HVAC Module Assembly
    G01479186Courtesy of GENERAL MOTORS CORP.
  4. Remove the heater core cowl gasket (1) from the heater core (2).
    Fig 2: Remove Heater Core Cowl Gasket From Heater Core
    G01479187Courtesy of GENERAL MOTORS CORP.
  5. Remove the heater core (1) from the HVAC module assembly (2).
    Fig 3: Remove Heater Core From HVAC Module Assembly
    G01479188Courtesy of GENERAL MOTORS CORP.
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