Muffler: Service and Repair

Exhaust Muffler Replacement (With LMM)

Removal Procedure





1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle (Service and Repair) .
2. Remove the spare tire, if necessary.
3. Install adjustable jack stands under the rear axle, if necessary.
4. Remove the rear axle vent hose from the rear axle, if necessary.
5. Remove the vent hose swivel clip from the rear brake crossover pipe, if necessary.




6. Remove the rear shock absorbers lower bolts and nuts, if necessary.
7. Lower the rear axle using the adjustable jack stands, if necessary.




8. Remove the exhaust muffler to exhaust particulate filter nuts (1).
9. With the aid of an assistant, support the exhaust muffler.




10. Remove the exhaust muffler hangers from the exhaust insulators (1).




11. Remove the exhaust muffler. (2500/3500 crew cab shown, regular/extended cabs similar).
12. Remove and discard the exhaust particulate filter to muffler gasket.



Installation Procedure





1. Install a NEW gasket onto the exhaust muffler studs.
2. Install the exhaust muffler to the particulate filter.
3. With the aid of an assistant, support the exhaust muffler.




4. Install the exhaust muffler hangers to the exhaust insulators (1).




Caution: Refer to Fastener Caution (Fastener Caution) .
5. Install the exhaust muffler to exhaust particulate filter nuts (1) and tighten to 45 Nm (33 lb ft) .




6. Raise the rear axle using the adjustable jack stands, if necessary.
7. Install the rear shock absorbers lower bolts and nuts, if necessary and tighten to 95 Nm (70 lb ft) .




8. Install the rear axle vent hose to the rear axle, if necessary.
9. Connect the vent hose swivel clip to the rear brake crossover pipe, if necessary.
10. Remove the adjustable jack stands from under the rear axle, if necessary.
11. Install the spare tire, if necessary.
12. Lower the vehicle.