Removal Procedure

Read the exhaust system cutting instructions. Refer to Exhaust System Cutting .
WARNING: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.

WARNING: 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.
Remove the exhaust rear muffler. Refer to Exhaust Rear Muffler Replacement .
Remove the 4 exhaust pipe front hanger bracket bolts (4, 5).

Fig 1: Exhaust Pipe Front Hanger Bracket, Insulators, Nuts And Bolts
Courtesy of GENERAL MOTORS COMPANY

NOTE: A second technician is required.
Remove the 2 exhaust pipe front hanger bracket insulator nuts (3).
Remove the exhaust pipe front hanger bracket (2).
Remove the 2 exhaust pipe front hanger bracket insulators (1).
Remove the heated oxygen sensor (1).

Fig 2: Heated Oxygen Sensor
Courtesy of GENERAL MOTORS COMPANY

NOTE: A second technician is required.
Remove and DISCARD the 3 catalytic converter nuts (3).
Remove the exhaust front pipe gasket (4) from the catalytic converter and exhaust front pipe (2).
Remove the exhaust system.