Tools Required
J 42640
Steering Column Anti-Rotation Pin
Removal Procedure
- Install the
J 42640
into the steering column lower access hole.
- Remove the left wheelhouse liner. Refer to
Front Wheelhouse Liner Replacement - Left Side
.
- Fully raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle
.
- Remove the catalytic converter to exhaust manifold nuts. (1500 series shown, 2500
series similar).
- Lower the vehicle part way in order to work through the wheel opening.
- Remove the spark plug wires from the spark plugs.
6.1. | Twist the spark plug wire boot a 1/2 turn. |
6.2. | Pull only on the boot in order to remove the wire from the spark plug. |
- Remove the spark plug wires from the ignition coils.
7.1. | Twist the spark plug wire boot a 1/2 turn. |
7.2. | Pull only on the boot in order to remove the wire from the ignition coil. |
- Mark the relationship of the upper intermediate steering shaft to the steering column.
- Remove the steering shaft coupling bolt (2) and nut (1) from the upper intermediate steering shaft.
- Separate the upper intermediate steering shaft (3) from the steering column, position both shafts out of the way.
- Remove the exhaust manifold bolts, and exhaust manifold.
- Remove and discard the exhaust manifold gasket.
- Remove and discard the catalytic converter seal.
- If replacing the exhaust manifold, remove the exhaust manifold heat shield bolts, and shield from the exhaust manifold.
Installation Procedure
Important:
• | Tighten the exhaust manifold bolts as specified in the service procedure. Improperly installed and/or leaking exhaust manifold gaskets may affect vehicle emissions and/or On-Board Diagnostic (OBD) II system performance. |
• | The cylinder head exhaust manifold bolt hole threads must be clean and free of debris or threadlocking material. |
• | Do not apply sealant to the first 3 threads of the bolt. |
Notice: Refer to Fastener Notice in the Preface section.
- If the exhaust manifold was replaced, position and install the exhaust manifold heat shield, and bolts to the exhaust manifold.
Tighten
Tighten the bolts to 9 N·m (80 lb in).
- Clean the threads of the exhaust manifold bolts.
- Apply a 5 mm (0.2 in) wide band of threadlock GM P/N 12345493 (Canadian P/N 10953488), or equivalent to the threads of the exhaust manifold bolts.
- Install a NEW catalytic converter seal to the catalytic converter.
- Position the NEW exhaust manifold gasket and exhaust manifold to the cylinder head.
- Ensure that the exhaust manifold is seated to the catalytic converter.
- Install the exhaust manifold bolts.
Tighten
- Tighten the bolts a first pass to 15 N·m (11 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.
- Tighten the bolts a final pass to 20 N·m (15 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.
- Using a flat punch, bend the gasket tab at the rear of the gasket around the cylinder head edge.
- Position and align the marks on the upper intermediate steering shaft and the steering column.
- Install the upper intermediate steering shaft (3) to the steering column.
- Install the steering shaft coupling bolt (2) and nut (1) to the upper intermediate steering shaft.
Tighten
Tighten the bolt/nut to 50 N·m (37 lb ft).
- Install the spark plug wires to the spark plugs.
- Install the spark plug wires to the ignition coils.
- Inspect the spark plug wires for proper installation.
14.1. | Push sideways on each boot in order to inspect the seating. |
14.2. | Reinstall any loose boot. |
- Fully raise and support the vehicle.
- Install the catalytic converter to exhaust manifold nuts. (1500 series shown,
2500 series similar).
Tighten
Tighten the nuts to 50 N·m (37 lb ft).
- Partially lower the vehicle.
- Install the left wheelhouse liner. Refer to
Front Wheelhouse Liner Replacement - Left Side
.
- Remove the
J 42640
from the steering column lower access hole.