GM Service Manual Online
For 1990-2009 cars only

Engine Coolant Thermostat Replacement 2.2L - L61

Removal Procedure

  1. If equipped with an automatic transmission, remove the exhaust manifold. Refer to Exhaust Manifold Removal in Engine Mechanical - 2.2L (L61).
  2. Drain the cooling system. Refer to Cooling System Draining and Filling .

  3. Object Number: 789955  Size: SH
  4. Remove the thermostat housing to water pump feed pipe bolts.

  5. Object Number: 789956  Size: SH
  6. Remove the thermostat housing to water pump feed pipe.

  7. Object Number: 951651  Size: SH
  8. Remove the thermostat.

Installation Procedure


    Object Number: 951651  Size: SH
  1. Install the thermostat.

  2. Object Number: 789956  Size: SH
  3. Install the thermostat housing to water pump feed pipe.
  4. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 789955  Size: SH
  5. Install the thermostat housing to water pump feed pipe bolt.
  6. Tighten
    Tighten the thermostat housing to water pump feed pipe bolt to 10 N·m (89 lb in).

  7. If equipped with an automatic transmission, install the exhaust manifold. Refer to Exhaust Manifold Removal in Engine Mechanical - 2.2L (L61).
  8. Fill the cooling system. Refer to Cooling System Draining and Filling .