Exhaust Manifold Replacement - Right

Exhaust Manifold Replacement - Right

Removal Procedure

1. Caution: Refer to Exhaust Service Caution in Service Precautions.

Caution: Refer to Battery Disconnect Caution in Service Precautions.

Disconnect the negative battery cable.
2. Remove the front suspension support brace.
3. Remove the engine sight cover.
4. Remove the air cleaner assembly.
5. Remove the spark plugs.
6. Remove the Bank 2, Sensor 1 oxygen sensor.
7. Remove the oil level indicator and tube assembly.
8. Raise the vehicle. Refer to Vehicle Lifting.
9. Remove the catalytic convertor.
10. Lower the vehicle.
11. Remove the mounting nuts for the exhaust manifold.





12. Important: In the following service procedure, it maybe necessary to remove the heat shield from the exhaust manifold.

Remove the exhaust manifold and gasket.

Installation Procedure

Important: Tighten the exhaust manifold bolts as specified in the service procedure. Improperly installed and/or leaking exhaust manifold gaskets may effect vehicle emissions and/or On-Board Diagnostics (OBD) II system performance.

The cylinder head exhaust manifold bolt hole threads must be clean and free of debris or threadlocking material.

1. Notice: Refer to Fastener Notice in Service Precautions.

If necessary, install the exhaust manifold heat shield and bolts.
Tighten the exhaust manifold heat shield bolts to 9 Nm (80 inch lbs.).
2. Raise the vehicle.

3. Important: In the following service procedure, DO NOT tighten the exhaust clamp. Leave it loosen so that the exhaust manifold and gasket can be aligned on the cylinder head.

Install the catalytic convertor on the intermediate pipe.
4. Lower the vessel.





5. Important: Use one or two bolts to hold the manifold and gasket in place.

Install the exhaust manifold and gasket.
6. Apply a 5 mm (0.2 inch) wide band of threadlock GM P/N 12345493 (Canadian P/N 10953488) or equivalent to the threads of the exhaust manifold bolts.
7. Install the exhaust manifold bolts.
1. Tighten the exhaust manifold bolts a first pass to 15 Nm (11 ft. lbs.). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, working toward the outside bolts.
2. Tighten the exhaust manifold bolts a final pass to 25 Nm (18 ft. lbs.). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, working toward the outside bolts.
8. Install the oil level indicator and tube assembly.
9. Install the spark plugs.
10. Install the engine sight cover.
11. Install the Bank 2, Sensor 1 oxygen sensor.
12. Install the front suspension support brace.
13. Install the air cleaner assembly.
14. Raise the vehicle.
15. Install the catalytic convertor to exhaust manifold nuts.
Tighten the exhaust manifold nuts to 20 Nm (15 ft. lbs.).
16. Tighten the exhaust clamp for the catalytic convertor.
Tighten the exhaust clamp to 20 Nm (15 ft. lbs.).
17. Lower the vehicle.
18. Connect the negative battery cable.