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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 Hose Replacement - Inlet (LU3) >> 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. Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM .
  2. Remove the air intake tube.
  3. Using the J 43181  disconnect the heater hose from the heater core inlet.
    1. 3.1. Install the J 43181  to the heater core pipe.
    2. 3.2. Close the tool around the heater core pipe.
    3. 3.3. Firmly pull the tool into the quick connect end of the heater hose.
    4. 3.4. Firmly grasp the heater hose. Pull the heater hose forward in order to disengage the hose from the heater core.
      Fig 1: Disconnect Heater Hose From Heater Core Inlet Using J 43181
      G01479060Courtesy of GENERAL MOTORS CORP.
  4. Reposition the inlet heater hose clamp from the engine.
  5. Remove the inlet heater hose from the engine.
    Fig 2: Remove Inlet Heater Hose From Engine
    G01479061Courtesy of GENERAL MOTORS CORP.
  6. Remove the inlet heater hose mounting bolt.
  7. Remove the inlet heater hose from the engine.
  8. Remove the inlet heater hose.
    Fig 3: Remove Inlet Heater Hose & Mounting Bolt
    G01479062Courtesy of GENERAL MOTORS CORP.
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