GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2007 🢒 VUE - FWD 🢒 Engine 🢒 Engine Cooling 🢒 Engine Coolant Thermostat Replacement

Engine Coolant Thermostat Replacement L66

Removal Procedure

    Object Number: 1237799 Size: SH
  1. Drain the coolant. Refer to Cooling System Draining and Filling .
  2. Remove the battery. Refer to Battery Replacement .
  3. Remove the thermostat housing.
  4. Remove the thermostat.

Installation Procedure

    Object Number: 1237799 Size: SH
  1. Install the thermostat with housing.
    2. 1.1. Install a new gasket.
    1.2. Position the thermostat with the housing.
    1.3. Apply thread sealant PST 565® to the bolt threads.

    Notice: Refer to Fastener Notice in the Preface section.

    1.4. Install the housing bolts.

    Tighten
    Tighten the thermostat housing bolts 12 N·m (106 lb in).

  2. Install the battery. Refer to Battery Replacement .
  3. Fill the cooling system. Refer to Cooling System Draining and Filling .

Engine Coolant Thermostat Replacement 2.4L (LAT)

Removal Procedure

    Object Number: 1812217 Size: SH
  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Reposition the radiator outlet hose clamp at the thermostat cover.
  3. Remove the radiator outlet hose from the thermostat cover.
  4. Remove the battery tray. Refer to Battery Tray Replacement .

    5. Object Number: 1713064 Size: SH
  5. Remove the thermostat cover bolts and cover.
  6. Remove the thermostat.
  7. Remove and discard the thermostat cover O-ring seal.

Installation Procedure

    Object Number: 1713064 Size: SH
  1. Install a NEW thermostat cover O-ring seal.
  2. Install the thermostat.

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the thermostat cover bolts.

    4. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 1812217 Size: SH
  4. Install the battery tray. Refer to Battery Tray Replacement .
  5. Install the radiator outlet hose to the thermostat cover.
  6. Position the radiator outlet hose clamp at the thermostat cover.
  7. Fill the cooling system. Refer to Cooling System Draining and Filling .

Engine Coolant Thermostat Replacement L61


Object Number: 1870185 Size: MF

Callout

Component Name

Caution: With a pressurized cooling system, the coolant temperature in the radiator can be considerably higher than the boiling point of the solution at atmospheric pressure. Removal of the surge tank cap, while the cooling system is hot and under high pressure, causes the solution to boil instantaneously with explosive force. This will cause the solution to spew out over the engine, the fenders, and the person removing the cap. Serious bodily injury may result.

Preliminary Procedures

  1. Partially drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Reposition the radiator outlet hose clamp at the thermostat housing.
  3. Remove the radiator outlet hose from the thermostat housing. Refer to Radiator Outlet Hose Replacement .

1

Thermostat Housing Bolts (Qty: 2)

2

Thermostat Housing

3

Thermostat

Procedure

  1. Remove the thermostat.
  2. Install new thermostat housing O-ring seal.