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Removal Procedure

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Water Pump, Bolts & Gasket
    GM1411892Courtesy of GENERAL MOTORS CORP.
  1. Drain the cooling system. Refer to Cooling System Draining and Filling (L26, LY7 GE 47716 Fill)  or Cooling System Draining and Filling (L26 Static Fill)  or Cooling System Draining and Filling (LY7 Static Fill)  or Cooling System Draining and Filling (LS4 GE47716 Fill)  or Cooling System Draining and Filling (LS4 Static Fill) .
  2. Loosen the water pump bolts (318).
  3. Remove the drive belt. Refer to Drive Belt Replacement - Accessory .
  4. Remove fluid from the power steering pump reservoir.
  5. Remove the power steering pump pulley. Refer to Power Steering Pump Pulley Replacement (L26) or Power Steering Pump Pulley Replacement (LS4) or Power Steering Pump Pulley Replacement (LY7) .
  6. Disconnect the power steering hoses and pipes from the power steering pump and reservoir. Refer to Power Steering Cooler Pipe/Hose Replacement (LY7) or Power Steering Cooler Pipe/Hose Replacement (LS4) or Power Steering Cooler Pipe/Hose Replacement (L26) and Power Steering Pressure Pipe/Hose Replacement (L26) or Power Steering Pressure Pipe/Hose Replacement (LY7) or Power Steering Pressure Pipe/Hose Replacement (LS4) .
  7. Remove the bolt that retains a clip that retains the pressure pipe to the front of the engine.
  8. Remove the water pump bolts (318).
  9. Remove the water pump (300) and gasket (314). Discard the gasket.
  10. Remove the camshaft position sensor. Refer to Camshaft Position Sensor Replacement .
  11. Unclip the wiring harness from the front of the engine.
    12. Fig 2: View Of Water Manifold, Bolts & Gaskets
    GM1411895Courtesy of GENERAL MOTORS CORP.
  12. Disconnect the engine coolant air bleed pipe hoses and clamps. Refer to Coolant Air Bleed Hose Replacement (LS4) .
  13. Remove the three coolant pump manifold to cylinder head bolts.
  14. Disconnect the heater hoses at the coolant pump manifold. Refer to Heater Pipes Replacement (LY7) or Heater Pipes Replacement (LS4) .
  15. Disconnect the radiator hoses from the coolant pump manifold. Refer to Radiator Inlet Hose Replacement (L26)  or Radiator Inlet Hose Replacement (LY7)  or Radiator Inlet Hose Replacement (LS4)  and Radiator Outlet Hose Replacement (L26)  or Radiator Outlet Hose Replacement (LY7)  or Radiator Outlet Hose Replacement (LS4) .
  16. Remove the coolant pump manifold bolts (301).
  17. Remove the coolant pump manifold (315) and gaskets (306). Discard the gaskets.
  18. Clean and inspect the water pump manifold mounting surfaces.
    19. Fig 3: View Of Thermostat Housing, Bolts, Thermostat, & O-Ring
    GM1411896Courtesy of GENERAL MOTORS CORP.
  19. Remove the thermostat housing bolts (302), if necessary.
  20. Remove the thermostat housing (303) and O-ring seal (304), if necessary.
  21. Remove the thermostat (305), if necessary.
  22. Remove the power steering pump and reservoir from the coolant pump manifold.
  23. Remove the drive belt idler pulleys from the coolant pump manifold.
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