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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 - Outlet (LB7) >> 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. Remove the heater and surge tank hose from the mounting clip.
  4. Using the J 43181  disconnect the heater hose from the heater core outlet.
    1. 4.1. Install the J 43181  to the heater core pipe.
    2. 4.2. Close the tool around the heater core pipe.
      Fig 1: Disconnect Heater Hose From Heater Core Inlet Using J 43181
      G01479069Courtesy of GENERAL MOTORS CORP.
    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. Remove the outlet heater hose nut (2) from the engine.

    Discard the nut.

  6. Remove the outlet heater hose bolt (3) from the engine.

    Discard the bolt.

  7. Remove the auxiliary outlet heater hose if equipped.
  8. Remove the outlet heater hose from the outlet pipe assembly.
  9. Remove the outlet heater hose.
    Fig 2: Remove Outlet Heater Hose, Bolt & Nut
    G01479070Courtesy of GENERAL MOTORS CORP.
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