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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 197 (Engine Cooling System) >> Repair Instructions >> Thermostat Housing Replacement - LZ9 (3.9L) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Use the J 38185 (SA9111E) to gently release tension on the hose clamp until the hose clamp lock feature engages allowing removal of the hose.
  1. Drain the cooling system. Refer to Draining and Filling Cooling System (Static Fill) .
  2. Fig 1: View Of Radiator Inlet & Outlet Hoses
    GM1677957Courtesy of GENERAL MOTORS CORP.
  3. Using the J 38185  , release the tension on the hose clamp at the thermostat housing and reposition the clamp.
  4. Remove the radiator outlet hose from the thermostat housing.
  5. Fig 2: Removing/Installing Thermostat Housing
    GM1556817Courtesy of GENERAL MOTORS CORP.
  6. Remove the thermostat housing bolt/stud.
  7. Remove the thermostat housing.