Removal Procedure

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Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM .
Reposition the inlet hose clamp at the water outlet.
Remove the inlet hose from the water outlet.

Fig 1: Removing Inlet Hose From Water Outlet
Courtesy of GENERAL MOTORS CORP.
Remove the water outlet bolts (2).
Remove the water outlet (1).
Remove the thermostat (3).

Fig 2: Removing Thermostat
Courtesy of GENERAL MOTORS CORP.