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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 - Outlet (LB7) >> 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 outlet.
    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 Outlet
    G01666572Courtesy of GENERAL MOTORS CORP.
  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 nut.
    7. Fig 2: Outlet Heater Hose
    G01666573Courtesy of GENERAL MOTORS CORP.
  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.
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