GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 181846  Size: SH
  1. Remove the thermostat housing. Refer to Engine Coolant Thermostat Housing Replacement .
  2. Remove the thermostat.
  3. Clean the mating surfaces.

Installation Procedure


    Object Number: 181846  Size: SH
  1. Install the thermostat.
  2. Install the thermostat housing. Refer to Engine Coolant Thermostat Housing Replacement .
  3. Inspect the system for leaks.