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Removal Procedure

WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. 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 spark plug wire harness from the thermostat bypass pipe.
  3. Remove the air inlet duct. Refer to in Engine Controls - 3.4L.
  4. Remove the upper radiator hose from the thermostat housing.
  5. Disconnect the left engine mount strut from the engine.
  6. Remove the heater hose from the bypass pipe.
  7. Remove the thermostat bypass pipe to throttle body nut.
    Fig 1: Removing Thermostat Bypass Nut
    G01500975Courtesy of GENERAL MOTORS CORP.
  8. Use the J 38185  in order to remove the thermostat bypass pipe hose clamps (1,5).
  9. Remove the thermostat bypass pipe to cylinder head nut (3).
  10. Remove the thermostat bypass pipe bolt (4).
    Fig 2: Removing Thermostat Bypass Pipe Bolt
    G01500976Courtesy of GENERAL MOTORS CORP.
  11. Remove the thermostat bypass pipe hose.
  12. Remove the thermostat bypass pipe.
Fig 3: Removing Thermostat Bypass Pipe Hose
G01500977Courtesy of GENERAL MOTORS CORP.
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