Coolant Heater Cord Replacement LA3, LY9, K05

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Disconnect the coolant heater power supply cord from the coolant heater (1).
3. Disconnect the coolant heater cord clip (2) from the coolant heater cord.
4. Lower the vehicle.
5. Disconnect the coolant heater cord clips (3, 4) from the following:

•	The engine wiring harness conduit

•	The engine oil level indicator tube

6. Remove the coolant heater cord from the vehicle.

1. Position the coolant heater power supply cord to the engine.
2. Route the coolant heater cord along the engine wiring harness conduit.
3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
4. Connect the coolant heater cord to the coolant heater (1).
5. Secure the coolant heater cord clip (2) to the coolant heater cord.
6. Lower the vehicle.
7. Secure the coolant heater cord clips (3, 4) to the following:

•	The engine wiring harness conduit

•	The engine oil level indicator tube

Coolant Heater Cord Replacement LA3, LY9, KA3

1. Remove the bolt (1) securing the coolant heater ground lead (2) to the camshaft bearing cap (3).
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.



3. Disconnect the coolant heater power supply cord from the coolant heater (1).
4. Disconnect the coolant heater cord clip (2) from the coolant heater cord.
5. Lower the vehicle.
6. Disconnect the coolant heater cord clips (3, 4) from the following:

•	The engine wiring harness conduit

•	The engine oil level indicator tube

7. Remove the coolant heater cord from the vehicle.

1. Position the coolant heater power supply cord to the engine.
2. Route the coolant heater cord along the engine wiring harness conduit.
3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
4. Connect the coolant heater cord to the coolant heater (1).
5. Secure the coolant heater cord clip (2) to the coolant heater cord.
6. Lower the vehicle.
7. Secure the coolant heater cord clips (3, 4) to the following:

•	The engine wiring harness conduit

•	The engine oil level indicator tube

Notice: Refer to Fastener Notice in the Preface section.




8. Install the bolt (1) securing the coolant heater ground lead (2) to the camshaft bearing cap (3).

Tighten
Tighten the coolant heater ground lead bolt to 9 N·m (80 lb in).

Coolant Heater Cord Replacement LY7, KO5

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .



2. Disconnect the coolant heater power supply cord from the coolant heater (1).
3. Disconnect the coolant heater cord clip (2) from the coolant heater cord.
4. Lower the vehicle.
5. Disconnect the coolant heater cord clips (3, 4) from the following:

•	The engine wiring harness conduit

•	The engine oil level indicator tube

6. Remove the coolant heater cord from the vehicle.

1. Position the coolant heater power supply cord to the engine.
2. Route the coolant heater cord along the engine wiring harness conduit.
3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
4. Connect the coolant heater cord to the coolant heater (1).
5. Secure the coolant heater cord clip (2) to the coolant heater cord.
6. Lower the vehicle.
7. Secure the coolant heater cord clips (3, 4) to the following:

•	The engine wiring harness conduit

•	The engine oil level indicator tube

Coolant Heater Cord Replacement LS6

1. Disconnect the engine coolant heater cord from the engine coolant heater.
2. Remove the engine coolant heater cord clip bolt.
3. Remove the engine coolant heater cord strap at the secondary air injection (AIR) pump hose.
4. Remove the engine coolant heater cord.

1. Install the engine coolant heater cord to the engine coolant heater.

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.

2. Position the engine coolant heater cord clip and install the bolt.

Tighten
Tighten the engine coolant heater cord clip bolt to 32 N·m (24 lb ft).





Important: The engine coolant heater cord must not contact the engine, pipes, manifold or any moving parts. Always keep the electrical cord neatly rolled up with the plug end of the cord tucked into the center of the coil and secured in place with the supplied tie straps.

3. Route the engine coolant heater cord over the generator.
4. Coil the engine coolant heater cord into a bundle and secure the bundle to the AIR hose pump with the strap.