Muffler: Service and Repair

Exhaust Muffler Replacement

Removal Procedure




1. Remove the frame brace. Refer to Frame Brace Replacement (Service and Repair).
2. Remove the spare tire.
3. Remove the rear axle tie rod. Refer to Rear Axle Tie Rod Replacement (Rear Suspension).
4. Remove the rear axle brace. Refer to Rear Axle Brace Replacement (Service and Repair).
5. Remove the shock absorber lower mounting bolts and move aside. Refer to Shock Absorber Replacement (Shock Absorber Replacement).
6. Remove the right rear coil spring, if equipped. Refer to Coil Spring Replacement (Rear Suspension).
7. If equipped with a 4.2L engine, remove the catalytic converter to muffler nuts (1).




8. If equipped with a 5.3L, or 6.0L engine, remove the muffler to catalytic converter nuts (1).




9. With the aid of an assistant, separate the exhaust insulators (1, 3, and 4) from the muffler hangers.
10. With the aid of an assistant, remove the muffler assembly (2) from the vehicle.

Installation Procedure




1. With the aid of an assistant, install the muffler assembly (2) to the vehicle.
2. With the aid of an assistant, install the exhaust insulators (1, 3, and 4) to the muffler hangers.





Caution: Refer to Fastener Caution (Fastener Caution).

3. If equipped with a 5.3L, or 6.0L engine, install the muffler to catalytic converter nuts (1) and tighten to 45 Nm (33 ft. lbs.).




4. If equipped with a 4.2L engine, install the catalytic converter to muffler nuts (1) and tighten to 45 Nm (33 ft. lbs.).
5. Install the right rear coil spring, if equipped. Refer to Coil Spring Replacement (Rear Suspension).
6. Position the shock absorbers and install the lower mounting bolts. Refer to Shock Absorber Replacement (Shock Absorber Replacement).
7. Install the rear axle brace. Refer to Rear Axle Brace Replacement (Service and Repair).
8. Install the rear axle tie rod. Refer to Rear Axle Tie Rod Replacement (Rear Suspension).
9. Install the spare tire.
10. Install the frame brace. Refer to Frame Brace Replacement (Service and Repair).