Exhaust System: Description and Operation

WARNING: THE NORMAL OPERATING TEMPERATURE OF THE EXHAUST SYSTEM IS VERY HIGH. NEVER ATTEMPT TO SERVICE ANY PART OF THE SYSTEM UNTIL IT HAS COOLED. BE ESPECIALLY CAREFUL WHEN WORKING AROUND THE THREE WAY CATALYTIC CONVERTER (TWC) AND DUAL CONVERTER Y PIPE. THE TEMPERATURE OF THE THREE WAY CATALYTIC CONVERTER AND DUAL CONVERTER Y PIPE RISES TO A HIGH LEVEL AFTER ONLY A FEW MINUTES OF ENGINE OPERATION.

CAUTION: When servicing exhaust system or removing exhaust components, disconnect all Heated Oxygen Sensors (HO2S) at the wiring connectors to prevent damage to the heated oxygen sensors and wiring harness.
The engines are equipped with the following:
- muffler
- dual converter Y pipe
- exhaust system flex tube
- muffler pipe brackets
- muffler bracket lower support

The production exhaust system shown differs from the service replacement system in the number of basic pieces used.