Coolant Heater Cord Replacement LS4

1. Cut the tie strap attaching the coolant heater cord to the diagonal brace.



2. Cut the tie straps (1) attaching the coolant heater cord to the engine wiring harness.
3. Disconnect the coolant heater cord connection from the coolant heater.
4. Remove the coolant heater cord.

Notice: The heater cord must not touch the engine, hot pipes, manifold, or any moving parts. Route the cord to the left front of the engine compartment securing with tie straps as necessary to prevent damage.

1. Install the coolant heater cord.
2. Connect the coolant heater cord connection to the coolant heater.
3. Install NEW tie straps (1) attaching the coolant heater cord to the engine wiring harness.



4. Install a NEW tie strap attaching the coolant heater cord to the diagonal brace.

Coolant Heater Cord Replacement RPOs LZE/LZ4/LZ9

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Disconnect the engine coolant heater cord (2) from the engine coolant heater.
3. Remove the heater cord clip (3) from the engine block.
4. Lower the vehicle.
5. Remove the heater cord clips (4, 5) from the transaxle.
6. Remove the heater cord clamp from the engine harness.
7. Cut the heater cord tape (1) at the diagonal brace and remove the cord.

1. Lay the heater cord into place.
2. Install the heater cord clamp to the engine harness.
3. Install the heater cord clips (4, 5) to the transaxle.
4. Raise and support the vehicle.
5. Install the heater cord clip (3) to the engine block.
6. Connect the engine coolant heater cord (2) to the engine coolant heater.
7. Lower the vehicle.
8. Gather any slack and install the heater cord tape (1) at the diagonal brace.