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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1677 (Engine Cooling System) >> Repair Instructions >> Thermostat Bypass Pipes Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. 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  in Engine Cooling.
  2. Remove the air cleaner intake duct. Refer to AIR CLEANER INTAKE DUCT in Removal & Installation - A/T.
  3. Remove the LH engine mount strut. Refer to ENGINE MOUNT STRUT REPLACEMENT in Engine Mechanical - 3.1L.
  4. Remove the spark plug wires from the left bank.
    Fig 1: Removing Radiator Inlet Hose
    G01969616Courtesy of GENERAL MOTORS CORP.
  5. Use the J 38185  in order to reposition the hose clamp from the water outlet housing.
  6. Remove the upper radiator inlet hose from the water outlet housing.
  7. Remove the heater outlet hose (2) from the thermostat bypass pipe.
    Fig 2: Removing Outlet & Inlet Hoses From Thermostat Bypass Pipe
    G01969617Courtesy of GENERAL MOTORS CORP.
  8. Remove the throttle body inlet and outlet hoses (1) from the thermostat bypass pipe.
  9. Remove the thermostat bypass pipe nut.
    Fig 3: Removing Thermostat Bypass Pipe Nut
    G01969618Courtesy of GENERAL MOTORS CORP.
  10. Use the J 38185  to reposition the hose clamp from the thermostat bypass pipe.
  11. Remove the thermostat bypass pipe hose from the pipe.
    Fig 4: Removing Thermostat Bypass Pipe Hose & Clamps
    G01969619Courtesy of GENERAL MOTORS CORP.
  12. Remove the thermostat bypass pipe bolt.
  13. Remove the thermostat bypass pipe.
    Fig 5: Removing Thermostat Bypass Pipe & Bolt
    G01969620Courtesy of GENERAL MOTORS CORP.
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