Spark Plug Wire Harness Replacement 3.8L

Right Bank

1. Turn the ignition to OFF (3) or to LOCK (2).
2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.




Notice: Twist the spark plug boot one-half turn in order to release the boot. Pull on the spark plug boot only. Do not pull on the spark plug wire or the wire could be damaged.

3. Disconnect the number 4 and number 6 plug wires from the spark plugs.
4. Lower the vehicle.
5. Disconnect the number 2 plug wire from the spark plug.



6. Disconnect the even (2, 4, 6) spark plug wires from the ignition coils.
7. Remove the spark plug wire harness.

Left Bank

1. Disconnect the odd numbered plug wires (1, 3, 5) from the ignition coils.

Notice: Twist the spark plug boot one-half turn in order to release the boot. Pull on the spark plug boot only. Do not pull on the spark plug wire or the wire could be damaged.

2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.



3. Remove the plug wires from the spark plugs.
4. Remove the spark plug wire harness from the vehicle.

Important: The lower tabs of the heat shield must extend over the hex on the spark plug in order to complete installation of the heat shield and the boot on the spark plug.

Left Bank

1. Install the spark plug wire harness to the vehicle.



2. Install the spark plug wires to the spark plugs.
3. Lower the vehicle.



4. Connect the odd numbered plug wires (1, 3, 5) to the ignition coils.

Right Bank

1. Install the spark plug wire harness.



2. Connect the even (2, 4, 6) spark plug wires to the ignition coils.
3. Connect the number 2 plug wire from the spark plug.
4. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.



5. Connect the number 4 and number 6 plug wires to the spark plugs.
6. Lower the vehicle.

Spark Plug Wire Harness Replacement 5.7L

Notice: Twist the spark plug boot one-half turn in order to release the boot. Pull on the spark plug boot only. Do not pull on the spark plug wire or the wire could be damaged.

1. Disconnect the spark plug wire at each spark plug.

•	Twist each spark plug 1/2 turn.

•	Pull only on the boot in order to remove the wire from each spark plug.

2. Disconnect the spark plug wire from the ignition coil.

•	Twist each spark plug boot 1/2 turn.

•	Pull only on the boot in order to remove the wires from the ignition coil.

1. Install the spark plug wires at the ignition coil.
2. Install the spark plug wire to each spark plug.
3. Inspect the wires for proper installation:

•	Push sideways on each boot in order to inspect the seating.

•	Reinstall any loose boot.