GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2005 🢒 Allure 🢒 Engine 🢒 Engine Cooling 🢒 Engine Coolant Thermostat Housing Replacement

Engine Coolant Thermostat Housing Replacement RPOs L26/L32

Tools Required

J 38185 Hose Clamp Pliers

Removal Procedure

    Object Number: 308970 Size: SH
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  2. Partially drain the cooling system. Refer to Cooling System Draining and Filling .
  3. Use the J 38185 in order to reposition the hose clamp from the water outlet housing.
  4. Remove the radiator inlet hose from the water outlet housing.

    5. Object Number: 153572 Size: SH
  5. Reposition the wiring harness from the water outlet housing stud.
  6. Remove the water outlet housing bolt and the stud.
  7. Remove the water outlet housing and the gasket.
  8. Remove the thermostat.
  9. Clean and Inspect the water outlet housing gasket mating surfaces.

Installation Procedure

    Object Number: 153572 Size: SH
  1. Install the thermostat.
  2. Install the gasket and the water outlet housing.

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

  3. Install the water outlet housing bolt and the stud to the water outlet housing.

    4. Tighten
    Tighten the bolt and the stud to 27 N·m (20 lb ft).

  4. Install the wiring harness to the water outlet housing stud.

    5. Object Number: 308970 Size: SH
  5. Install the radiator inlet hose to the water outlet housing.
  6. Use the J 38185 in order to reposition and install the hose clamp to the water outlet housing.
  7. Fill the cooling system. Refer to Cooling System Draining and Filling .
  8. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .

Engine Coolant Thermostat Housing Replacement LY7


Object Number: 1577631 Size: SF

Callout

Component Name

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications.

Preliminary Procedure

  1. Remove the heater hoses. Refer to Heater Hoses Replacement.
  2. Remove the throttle body. Refer to Throttle Body Assembly Replacement.
  3. Remove the radiator water pipe outlet. Refer to Radiator Outlet Pipe Replacement.

1

Bolt, Thermostat Housing (Qty: 3)

2

Housing, Thermostat

Tip
The thermostat and thermostat housing are serviced as a unit. They are not serviced separately.