Removal Procedure

WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

Remove the air cleaner assembly.
Drain the cooling system. Refer to Draining and Filling Cooling System
Use the J 38185 in order reposition the hose clamp from the water outlet housing.
Remove the radiator hose from the water outlet housing.

Fig 1: Radiator Hose From The Water Outlet Housing
Courtesy of GENERAL MOTORS CORP.
Remove the water outlet housing bolts.
Remove the water outlet housing and gasket.

Fig 2: Water Outlet Housing
Courtesy of GENERAL MOTORS CORP.
Remove the thermostat.
Clean the water outlet gasket mating surfaces.

Fig 3: Thermostat (3.1L)
Courtesy of GENERAL MOTORS CORP.