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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 (Delphi) >> 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 Cover From HVAC Module Assembly
    G01479192Courtesy of GENERAL MOTORS CORP.
  4. Remove the heater core cowl gasket (1) from the heater core (2).
  5. Remove the heater core (2) from the HVAC module assembly (3).
    Fig 2: Remove Heater Core Cowl Gasket From Heater Core
    G01479193Courtesy of GENERAL MOTORS CORP.
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