GM Service Manual Online
For 1990-2009 cars only

Exhaust system hangers and insulators provide the following benefits:

    • Support the weight of the exhaust system
    • Isolate engine noise
    • Isolate engine vibration
    • Space the exhaust system away from the underbody of the vehicle and allow for exhaust system expansion that occurs as the exhaust system warms up

The exhaust system utilizes several hangers and insulators:


Object Number: 389537  Size: SH
    • The exhaust resonator pipe is supported by exhaust pipe hangers.

Object Number: 289496  Size: SH
    • The exhaust pipe where it meets the right side of the vehicle is supported by the exhaust muffler front hanger bracket and an exhaust pipe hanger bracket insulator.

Object Number: 373046  Size: SH
    • The exhaust pipe where it crosses under the rear suspension is supported with the exhaust pipe rear hanger bracket and an exhaust pipe rear hanger insulator.

Object Number: 289499  Size: SH
    • The rear of the muffler has two exhaust muffler rear hanger insulators and a exhaust muffler rear hanger bracket bolted to the bumper impact bar.