GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: The thermostat is not serviceable separately. The water pump inlet and thermostat must be replaced as an assembly.


    Object Number: 846666  Size: SH
  1. Remove the radiator outlet hose.

  2. Object Number: 370076  Size: SH
  3. Remove the water pump inlet bolts.
  4. Remove the water pump inlet and thermostat from the water pump.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 370076  Size: SH
  1. Install the thermostat and water pump inlet to the water pump.
  2. Install the water pump inlet bolts.
  3. Tighten
    Tighten the water pump inlet bolts to 15 N·m (11 lb ft).


    Object Number: 846666  Size: SH
  4. Install the radiator outlet hose.