Catalytic Converter: Service and Repair

Catalytic Converter Replacement (6.6 - (LMM))

Removal Procedure

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (Service and Repair).




2. Remove the catalytic converter (1) to particulate filter nuts (3).




3. Loosen the catalytic converter to exhaust pipe adaptor clamp (1).
4. Slide the exhaust pipe clamp up onto the exhaust pipe adapter.




5. Remove the catalytic converter hanger to transmission bolts (1).
6. With the catalytic converter hanger attached, remove the catalytic converter from the vehicle.
7. Discard the catalytic converter to particulate filter gasket.
8. If replacing the catalytic converter, remove the catalytic converter hanger.

Installation Procedure

1. If replacing the catalytic converter, apply water based lubricant to the catalytic converter hanger bracket and slide the exhaust pipe hanger bracket into the catalytic converter hanger.




2. Install a NEW catalytic converter to particulate filter gasket.
3. Position the catalytic converter to the particulate filter, exhaust pipe adapter and transmission.

Caution: Refer to Fastener Caution (Fastener Caution).

4. Install the catalytic converter hanger to transmission bolts (1) and tighten to 34 Nm (25 lb ft).




5. Install the catalytic converter to particulate filter nuts (3) until snug.





Note: Ensure that the manifold pipe is square to the exhaust pipe adapter.

6. Slide the exhaust pipe clamp (1) down and around the pipe connection.
7. Tighten the exhaust pipe clamp and catalytic converter nuts.

* Tighten the clamp to 40 Nm (30 lb ft).
* Tighten the nuts to 40 Nm (30 lb ft).

8. Lower the vehicle.