Exhaust Muffler Replacement LY7, LZ9

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. If equipped, remove the frame brace. Refer to Frame Brace Replacement .
3. Remove the exhaust pipe to muffler nuts.



4. With the aid of an assistant, separate the muffler insulators from the hangers, if equipped with a 3.9L engine.
5. Remove the muffler assembly.



6. With the aid of an assistant, separate the muffler insulators from the hangers, if equipped with a 3.6L engine.
7. Remove the muffler assembly.

Important: Replace the muffler hangers any time the exhaust system is removed from the vehicle. Do not use any mineral oil based lubricants or sharp tools when installing new exhaust system hangers.

1. With the aid of an assistant, position the muffler assembly, if equipped with a 3.6L engine.
2. Install the muffler insulators to the hangers.



3. With the aid of an assistant, position the muffler assembly, if equipped with a 3.9L engine.
4. Install the muffler insulators to the hangers.

Notice: Refer to Fastener Notice in the Preface section.




5. Install the exhaust pipe to muffler nuts.

Tighten
Tighten the nuts to 30 N·m (22 lb ft).

6. If equipped, install the frame brace. Refer to Frame Brace Replacement .
7. Lower the vehicle.

Exhaust Muffler Replacement 2.4L, 3.5L, and 3.9L

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. If equipped, remove the frame brace. Refer to Frame Brace Replacement .
3. If equipped with a 2.4L engine, remove the exhaust manifold pipe to muffler nuts.



4. If equipped with a 3.5L, or a 3.9L engine with a automatic transaxle, remove the right (rear) catalytic converter to muffler nuts.



5. With the aid of an assistant , remove the muffler insulators from the hangers.
6. Remove the muffler assembly.

Important: Replace the muffler hangers any time the exhaust system is removed from the vehicle. Do not use any mineral oil based lubricants or sharp tools when installing new exhaust system hangers.

1. With the aid of an assistant , position the muffler assembly.
2. Install the muffler insulators to the hangers.

Notice: Refer to Fastener Notice in the Preface section.




3. If equipped with a 3.5L, or a 3.9L engine with a automatic transaxle, install the right (rear) catalytic converter to muffler nuts.

Tighten
Tighten the nuts to 30 N·m (22 lb ft).




4. If equipped with a 2.4L engine, install the exhaust manifold pipe to muffler nuts.

Tighten
Tighten the nuts to 30 N·m (22 lb ft).

5. If equipped, install the frame brace. Refer to Frame Brace Replacement .
6. Lower the vehicle.