Exhaust Manifold Replacement - Right Side LP1, LY7

Caution: Refer to Exhaust Service Caution in the Preface section.

Caution: Refer to Protective Goggles and Glove Caution in the Preface section.

1. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Right Side .



2. Remove the catalytic converter nuts.



3. Remove the exhaust manifold bolts.

Important: Do not reuse the gasket.

4. Remove the exhaust manifold and discard the exhaust manifold gasket.
5. Clean and inspect the exhaust manifold. Refer to Exhaust Manifold Cleaning and Inspection - Right Side for the 2.8L (LP1) engine, or Exhaust Manifold Cleaning and Inspection - Left Side for the 3.6L engine.

Important: Inspect the catalytic converter seal/heat shield sealing surface. Replace the seal/heat shield if the sealing surface is worn or damaged.

1. Install the catalytic converter seal/heat shield to the catalytic converter.



2. Install a NEW exhaust manifold gasket to the exhaust manifold.
3. Install the exhaust manifold with the gasket to the catalytic converter and the cylinder head.

Notice: Refer to Fastener Notice in the Preface section.

4. Install the exhaust manifold bolts.

Tighten
Tighten the exhaust manifold bolts to 20 N·m (15 lb ft).




5. Install the catalytic converter nuts.

Tighten
Tighten the catalytic converter nuts to 50 N·m (37 lb ft).

6. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Right Side .

Exhaust Manifold Replacement - Right Side LS6

1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 5.7L.
2. Remove the right bank coil assembly. Refer to Ignition Coil Replacement in Engine Controls - 5.7L.
3. Remove the right bank spark plugs. Refer to Spark Plug Replacement in Engine Controls - 5.7L.
4. Remove the oil level dipstick tube. Refer to Oil Level Indicator and Tube Replacement in Engine Mechanical - 5.7L.
5. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
6. Remove the right catalytic converter. Refer to Catalytic Converter Replacement - Right Side .



7. Remove the starter motor. Refer to Starter Motor Replacement in Engine Electrical.
8. Lower the vehicle.
9. Remove the exhaust manifold bolts.
10. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
11. Remove the exhaust manifold, bolts, and gasket. Discard the gasket.
12. Remove the heat shield from the manifold, if required.
13. Clean and inspect the exhaust manifold. Refer to Exhaust Manifold Cleaning and Inspection in Engine Mechanical - 5.7L.

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.

Notice: Refer to Fastener Notice in the Preface section.




1. If necessary, install the exhaust manifold heat shield and bolts.

Tighten
Tighten the exhaust manifold heat shield bolts to 9 N·m (80 lb in).

2. Position the exhaust manifold and a NEW gasket into place.
3. Lower the vehicle.
4. Install the exhaust manifold bolts. Refer to Exhaust Manifold Installation - Right Side in Engine Mechanical - 5.7L.
5. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
6. Install the starter motor. Refer to Starter Motor Replacement in Engine Electrical.
7. Install the right catalytic converter. Refer to Catalytic Converter Replacement - Right Side .
8. Lower the vehicle.
9. Install the right bank spark plugs. Refer to Spark Plug Replacement in Engine Controls - 5.7L.
10. Install the right bank coil assembly. Refer to Ignition Coil Replacement in Engine Controls - 5.7L.
11. Install the oil level dipstick tube. Refer to Oil Level Indicator and Tube Replacement in Engine Mechanical - 5.7L.
12. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 5.7L.