GM Service Manual Online
For 1990-2009 cars only

Exhaust Muffler

The muffler control the exhaust noise levels. The exhaust muffler is a tri-flow design.

    • The 3.8L engines without RPO Y87 use a single outlet muffler.
    • The 3.8L engines with PRO Y87 use a dual outlet muffler.
    • The 5.7L engine uses a dual outlet muffler.

The muffler used on this vehicle must be serviced with the exhaust pipe they can not be serviced separately.