Removal Procedure
Notice: To prevent internal damage to the flexible coupling of the catalytic
converter assembly, the converter must be supported. The vertical movement
at the rear of the catalytic converter assembly must not exceed 6 degrees
up or down.
- Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information.
- If the vehicle is equipped with All-Wheel-Drive, remove the propeller
shaft. Refer to
Propeller Shaft Replacement
in Propeller Shaft.
- Remove the catalytic converter nuts from the exhaust manifold studs.
- Remove the oxygen sensor. Refer to
Heated Oxygen Sensor 2 Replacement
in Engine Controls - 3.4L.
- Remove the catalytic converter bolts.
- Remove the catalytic converter.
Installation Procedure
- Position and support the catalytic converter
under the vehicle.
- Install a new catalytic converter gasket.
- Install the catalytic converter bolts. Do not tighten the bolts.
- Install a new catalytic converter seal.
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.
- Install the catalytic converter nuts.
Tighten
- Tighten the catalytic converter nuts to 34 N·m (25 lb ft).
- Tighten the catalytic converter bolts to 45 N·m (33 lb ft).
- Install the oxygen sensor. Refer to
Heated Oxygen Sensor 2 Replacement
in Engine Controls - 3.4L.
- Lower the vehicle.