Engine Coolant Thermostat Replacement L36 And L67

Notice: When adding coolant, use DEX-COOL® coolant. If silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner-at 50 000 km (30,000 mi) or 24 months.

1. Remove the engine cover.
2. Disconnect the negative battery cable. Refer to

   Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

   in General Information.
3. Partially drain the coolant to a level below the thermostat. Refer to Cooling System Draining and Filling .



4. Disconnect the radiator inlet hose and clamp from the thermostat housing.



5. Remove the coolant outlet bolts (1) and the thermostat housing (2).
6. Remove the gasket (3) and the thermostat (4).
7. Clean the gasket mating surfaces.

1. Install the thermostat (4) using a new gasket (3).
2. Install the thermostat housing (2) and the thermostat housing bolts (1).

Tighten
Tighten the thermostat housing bolts to 20 N·m (15 lb ft).

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.




3. Connect the radiator inlet hose and clamp to the thermostat housing.
4. Refill the cooling system. Refer to Cooling System Draining and Filling .
5. Connect the negative battery cable.

Tighten
Tighten the negative battery cable bolt to 15 N·m (11 lb ft).

6. Install the engine cover.
7. Start the engine. After the engine reaches normal operating temperature, check for coolant leaks.

Engine Coolant Thermostat Replacement L47

1. Disconnect the negative battery cable. Refer to

   Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

   in General Information.

Notice: When adding coolant, use DEX-COOL® coolant. If silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner-at 50 000 km (30,000 mi) or 24 months.

2. Drain the coolant. Refer to Cooling System Draining and Filling .
3. Remove the air intake duct.



4. Disconnect the radiator outlet hose and clamp from the thermostat housing.



5. Remove the thermostat housing bolts and the thermostat housing.



6. Remove the thermostat and the gasket.
7. Clean the gasket mating surfaces.

1. Install the thermostat.
2. Install the thermostat housing using a new gasket.



3. Install the thermostat housing bolts.

Tighten
Tighten the thermostat housing bolts to 20 N·m (15 lb ft).

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.




4. Connect the radiator outlet hose and clamp to the thermostat housing.
5. Install the air intake duct.
6. Refill the coolant. Refer to Cooling System Draining and Filling .
7. Connect the negative battery cable.

Tighten
Tighten the negative battery cable bolt to 15 N·m (11 lb ft).

8. Start the engine. After the engine reaches normal operating temperature, check for coolant leaks.