General Description
Notice: In order to prevent overheating of the floor panel or damage to the
passenger compartment, insulation, and trim materials, check the underbody
for adequate clearance when inspecting or replacing the exhaust system components.
Important: Exhaust system designs vary according to the engine designation and
intended use of the vehicle. The catalytic converter and muffler used on these
vehicles are standard equipment. The exhaust system should not be tampered
with or changed in any way. If exhaust components need to be replaced, use
only original equipment parts.
The 3.8L engine equipped vehicles without RPO Y87 (performance enhancement
package) use the following components:
| • | A three-way catalytic converter |
| • | A single outlet exhaust muffler |
The 3.8L engine equipped vehicles with RPO Y87 use the following components:
| • | A three-way catalytic converter |
The 5.7L engine equipped vehicles use the following components:
| • | A dual three-way plus oxidation catalytic converter (oxidation
catalytic converter) |
Periodic maintenance of the exhaust system is not required. If the vehicle
is raised for other service, check the condition of the complete exhaust system.
Inspect the complete exhaust system, nearby body parts, and the rear
compartment lid for the following conditions:
| • | Broken or damaged parts |
| • | Mispositioned or missing parts |
| • | Other deterioration that could permit exhaust fumes to seep into
the rear compartment or the passenger compartment. |
Check the rear compartment for dust or water, which may indicate a problem
in this area.
Correct any faulty areas immediately.
On-Vehicle Service and Component Replacement
Caution: Always wear protective goggles and gloves when removing exhaust parts
as falling rust and sharp edges from worn exhaust components could result
in serious personal injury.
Exhaust system service includes the replacement of the
following items:
| • | The catalytic converter |
| • | The catalytic converter and the exhaust muffler hangers |
| • | The complete exhaust system |
| • | The exhaust heat shield |
