Exhaust Manifold Replacement - Left Side LZ4

1. Remove the left side catalytic converter. Refer to Catalytic Converter Replacement - Left Side.
2. Remove the heated oxygen sensors (HO2S). Refer to Heated Oxygen Sensor Replacement - Bank 2 Sensor 1.
3. Remove the left side exhaust manifold bolts (1).
4. Remove the left side exhaust manifold and gasket.

1. Install the left side exhaust manifold and a NEW exhaust manifold gasket onto the cylinder.

Caution: Refer to Fastener Caution in the Preface section.

2. Install the exhaust manifold bolts and tighten to 20 N·m (15 lb ft).
3. Install the HO2S. Refer to Heated Oxygen Sensor Replacement - Bank 2 Sensor 1.
4. Install the left side catalytic converter. Refer to Catalytic Converter Replacement - Left Side.

Exhaust Manifold Replacement - Left Side LY7 or LCS

1. Remove the left side catalytic converter. Refer to Catalytic Converter Replacement - Left Side.
2. Remove the heated oxygen sensors (HO2S). Refer to Heated Oxygen Sensor Replacement - Bank 2 Sensor 1.
3. Remove the oil level indicator and tube. Refer to Oil Level Indicator and Tube Replacement.
4. Lower vehicle.
5. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Left Side.
6. Remove the left side exhaust manifold bolts (1).
7. Raise the vehicle. Refer to Lifting and Jacking the Vehicle.
8. Remove the left side exhaust manifold and gasket.

1. Install the left side exhaust manifold and a NEW exhaust manifold gasket onto the cylinder.
2. Lower the vehicle.

Caution: Refer to Fastener Caution in the Preface section.

3. Install the exhaust manifold bolts and tighten to 20 N·m (15 lb ft).
4. Install the HO2S. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1.
5. Remove the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement - Left Side.
6. Install the left side catalytic converter. Refer to Catalytic Converter Replacement - Left Side.
7. Install the oil level indicator and tube. Refer to Oil Level Indicator and Tube Replacement.