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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1245 (Engine Cooling System) >> Repair Instructions >> Thermostat Bypass Pipes Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. 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.
  3. Remove the LH engine mount strut. Refer to ENGINE MOUNT STRUT REPLACEMENT in Engine Mechanical - 3.1 L.
  4. Remove the spark plug wires from the left bank.
    Fig 1: Removing Upper Radiator Inlet Hose From Water Outlet Housing
    G02084053Courtesy 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.
  8. Remove the throttle body inlet and outlet hoses (1) from the thermostat bypass pipe.
    Fig 2: Removing Heater Outlet Hose From Thermostat Bypass Pipe
    G02084054Courtesy of GENERAL MOTORS CORP.
  9. Remove the thermostat bypass pipe nut.
    Fig 3: Removing Thermostat Bypass Pipe Nut
    G02084055Courtesy 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 From Pipe
    G02084056Courtesy of GENERAL MOTORS CORP.
  12. Remove the thermostat bypass pipe bolt.
  13. Remove the thermostat bypass pipe.
    Fig 5: Removing Thermostat Bypass Pipe
    G02084057Courtesy of GENERAL MOTORS CORP.
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