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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 Hose Replacement - Inlet (L18) >> 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 cooling system.
  2. Remove the air intake tube.
  3. Remove the heater and surge tank hose from the mounting clip.
  4. Using the J 43181  disconnect the heater hose from the heater core inlet.
    1. 4.1. Install the J 43181  to the heater core pipe.
    2. 4.2. Close the tool around the heater core pipe.
    3. 4.3. Firmly pull the tool into the quick connect end of the heater hose.
    4. 4.4. Firmly grasp the heater hose. Pull the heater hose forward in order to disengage the hose from the heater core.
    5. Fig 1: Disconnecting Heater Hose From Heater Core Inlet
    G01666550Courtesy of GENERAL MOTORS CORP.
  5. Remove the inlet heater hose (1) from the engine coolant inlet fitting.
  6. Remove the inlet heater hose.
    Fig 2: Inlet Heater Hose At Engine
    G01666551Courtesy of GENERAL MOTORS CORP.
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