Exhaust Manifold Replacement - Left Side LY7

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

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

1. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Left Side.
2. Remove the oil level indicator. Refer to Oil Level Indicator and Tube Replacement.
3. Remove the catalytic converter to exhaust manifold nuts (1).



4. Remove the exhaust manifold bolts (1).

Note: Do not reuse the gasket.

5. Remove the exhaust manifold and gasket. Discard the gasket.

1. Install one exhaust manifold bolt to the exhaust manifold.
2. Install the NEW exhaust manifold gasket onto the cylinder head and bolt.
3. Install the exhaust manifold (with gasket) to the catalytic converter and the cylinder head.

Caution: Refer to Fastener Caution in the Preface section.

4. Install the remaining exhaust manifold bolts and tighten to 20 N·m (15 lb ft).



5. Install the catalytic converter to exhaust manifold nuts (1) and tighten to 50 N·m (37 lb ft).
6. Install the oil level indicator. Refer to Oil Level Indicator and Tube Replacement.
7. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Left Side.

Exhaust Manifold Replacement - Left Side LNJ

1. Remove the 3 nuts attaching the exhaust crossover pipe to the left exhaust manifold. Refer to Exhaust Crossover Pipe Replacement.
2. Remove the exhaust gas recirculation (EGR) pipe. Refer to Exhaust Gas Recirculation Pipe Replacement.



3. Remove the exhaust manifold heat shield bolts (2).
4. Remove the exhaust manifold heat shield (1).



5. Remove the exhaust manifold nuts (3).
6. Remove the exhaust manifold (2).
7. Remove the exhaust manifold gasket (1).



8. If necessary, remove the exhaust manifold studs.
9. Clean the exhaust manifold and the cylinder head exhaust manifold sealing surfaces.

Caution: Refer to Fastener Caution in the Preface section.




1. If previously removed, install the exhaust manifold studs and tighten to 18 N·m (13 lb ft).



2. Install the exhaust manifold gasket (1).
3. Install the exhaust manifold (2).
4. Install the exhaust manifold nuts (3) and tighten to 16 N·m (12 lb ft).



5. Install the exhaust manifold heat shield (1).
6. Install the exhaust manifold heat shield bolts (2) and tighten to 10 N·m (89 lb in).
7. Install the EGR pipe. Refer to Exhaust Gas Recirculation Pipe Replacement.
8. Install the 3 nuts attaching the exhaust crossover pipe to the left exhaust manifold. Refer to Exhaust Crossover Pipe Replacement.