Exhaust Manifold Replacement Left Front

1. Disconnect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Carefully disconnect the throttle body air inlet duct.
3. Remove the right engine mount strut bracket. Refer to Engine Mount Strut Bracket Replacement .
4. Remove the AIR pipe if equipped. Refer to Secondary Air Injection Check Valve and Check Valve Pipe Replacement - Bank 1 in Engine Controls - 3.4L.
5. Remove the thermostat bypass pipe. Refer to
6. Remove the exhaust crossover pipe heat shield. Refer to Exhaust Crossover Replacement .
7. Remove the exhaust crossover pipe nuts to the left exhaust manifold. Refer to Exhaust Crossover Replacement .



8. Remove the left exhaust manifold heat shield bolts.
9. Remove the left exhaust manifold heat shield.



10. Remove the left exhaust manifold nuts.
11. Remove the left exhaust manifold.
12. Remove the left exhaust manifold gasket.
13. Clean the left exhaust manifold to the left cylinder head sealing surfaces. Refer to Exhaust Manifold Clean and Inspect .

1. Install the left exhaust manifold gasket.
2. Install the left exhaust manifold. Refer to Exhaust Manifold Installation (Left Side) .



3. Install the left exhaust manifold heat shield. Refer to Exhaust Manifold Installation (Left Side) .
4. Install the exhaust crossover pipe nuts to the left exhaust manifold. Refer to Exhaust Crossover Replacement .
5. Install the exhaust crossover pipe heat shield. Refer to Exhaust Crossover Replacement .
6. Install the AIR pipe if equipped. Refer to Secondary Air Injection Check Valve and Check Valve Pipe Replacement - Bank 2 in Engine Controls - 3.4L.
7. Install the right engine mount strut bracket. Refer to Engine Mount Strut Bracket Replacement .
8. Carefully install the throttle body air inlet duct.
9. Connect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

Exhaust Manifold Replacement Right Rear

1. Disconnect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Disconnect the throttle body air inlet duct. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.4L.
3. Remove the AIR check valve/pipe if equipped. Refer to Secondary Air Injection Check Valve and Check Valve Pipe Replacement - Bank 2 in Engine Controls - 3.4L.
4. Remove the exhaust crossover pipe heat shield. Refer to Exhaust Crossover Replacement .
5. Remove the exhaust crossover pipe nuts to the right exhaust manifold. Refer to Exhaust Crossover Replacement .
6. Disconnect the oxygen sensor wiring harness connector.
7. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
8. Disconnect the three-way catalytic converter pipe from the right exhaust manifold. Refer to Catalytic Converter Replacement in Engine Exhaust.
9. Remove the exhaust gas recirculation (EGR) valve from the intake manifold. Refer to Exhaust Gas Recirculation Valve Replacement in Engine Controls - 3.4L.



10. Remove the right exhaust manifold upper heat shield bolts.
11. Remove the right exhaust manifold upper heat shield.



12. Remove the right exhaust manifold lower heat shield bolts.
13. Remove the right exhaust manifold lower heat shield.



14. Remove the right exhaust manifold nuts.
15. Remove the right exhaust manifold.
16. Remove the right exhaust manifold gasket.
17. Clean the right exhaust manifold to the right cylinder head sealing surfaces. Refer to Exhaust Manifold Clean and Inspect .
18. If replacing the right exhaust manifold remove the EGR valve pipe.



19. If replacing the right exhaust manifold remove the heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor Replacement in Engine Controls - 3.4L.

1. If removed, install the heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor Replacement in Engine Controls - 3.4L.
2. If removed, install the exhaust gas recirculation (EGR) valve pipe.



3. Install the right exhaust manifold gasket. Install the right exhaust manifold. Refer to Exhaust Manifold Installation (Right Side) .



4. Install the right exhaust manifold heat shields. Refer to Exhaust Manifold Installation (Right Side) .
5. Install the EGR valve to the intake manifold. Refer to Exhaust Gas Recirculation Valve Replacement in Engine Controls - 3.4L.
6. Install the three-way catalytic converter pipe to the right exhaust manifold. Refer to Catalytic Converter Replacement in Engine Exhaust.
7. Lower the vehicle.
8. Connect the oxygen sensor wiring harness connector.
9. Install the exhaust crossover pipe nuts to the right exhaust manifold. Refer to Exhaust Crossover Replacement .
10. Install the exhaust crossover pipe heat shield. Refer to Exhaust Crossover Replacement .
11. Install the AIR check valve/pipe if equipped. Refer to Secondary Air Injection Check Valve and Check Valve Pipe Replacement - Bank 2 in Engine Controls - 3.4L.
12. Install the throttle body air inlet duct. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.4L.
13. Connect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.