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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 52 (Engine Cooling System) >> Repair Instructions >> Engine Coolant Thermostat Replacement (LS4) >> Installation Procedure

Installation 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.
NOTE: DO NOT use cooling system seal tabs, or similar compounds, unless otherwise instructed. The use of cooling system seal tabs, or similar compounds, may restrict coolant flow through the passages of the cooling system or the engine components. Restricted coolant flow may cause engine overheating and/or damage to the cooling system or the engine components/assembly.
    Fig 1: View Of Thermostat Housing, Bolts, Thermostat, & O-Ring
    GM1411896Courtesy of GENERAL MOTORS CORP.
  1. Install the thermostat (305).
  2. Install the O-ring seal (304) and water outlet housing (303).
    3. NOTE: Refer to FASTENER NOTICE .
  3. Install the water outlet housing bolts (302).

    Tighten:  Tighten the bolts to 15 N.m (11 lb ft).

    4. Fig 2: View Of Radiator Inlet Hose & Water Outlet Housing (LS4)
    GM1524229Courtesy of GENERAL MOTORS CORP.
  4. Install the radiator inlet hose to the water outlet housing.
  5. Use the J 38185  in order to reposition and install the hose clamp to the water outlet housing. See Special Tools .
  6. Fill 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) .
  7. Install the radiator inlet hose. Refer to Radiator Inlet Hose Replacement (L26)  or Radiator Inlet Hose Replacement (LY7)  or Radiator Inlet Hose Replacement (LS4) .
  8. Install the radiator air lower baffle and deflector. Refer to Radiator Air Lower Baffle and Deflector Replacement .
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