Exhaust Muffler Replacement (L94 with MWN)

Fig 1: Exhaust Muffler & Mounting Components (L94 with MWN)

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
WARNING: Refer to Exhaust Service Warning . WARNING: Refer to Eye Protection Warning . Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1	Exhaust Clamp Fastener CAUTION: Refer to Fastener Caution . Tighten 28 (21 lb ft)
2	Exhaust Isolators NOTE: Lubricate for ease of installation.
3	Exhaust Resonator Clamp Fastener Tighten 55 (40 lb ft)
4	Exhaust Muffler Procedure Loosen the exhaust muffler clamp fastener (1) and detach the muffler from the 3-way catalytic converter. Loosen the exhaust resonator clamp fastener (3) and detach the exhaust muffler (4) from the exhaust resonator. Remove the exhaust muffler (4) from the exhaust isolators (2). NOTE: Remove/cut-off alignment pin on resonator and align exhaust system by hand if parts are replaced as NEW.