Exhaust Muffler Replacement LV6 Engine

1. Raise the vehicle. Support the vehicle. Refer to Lifting and Jacking the Vehicle .



2. Remove the bolt and clamp from the three-way catalytic converter (TWC) assembly.
3. Remove the hangers from the muffler.
4. Remove the muffler/tail pipe assembly from the vehicle.
5. Clean the seal mating surfaces.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

1. Install the muffler/tail pipe assembly, with a new gasket, to the vehicle.
2. Install the hangers to the muffler.




Important: Ensure clamp (1) is positioned in the acceptable range (A), in relation to the muffler (2).

3. Install the bolt and clamp (1) to the TWC assembly

Tighten
Tighten the clamp bolt to 32 N·m (24 lb ft).

4. Lower the vehicle.