Removing Exhaust Parts
Caution: Wear protective goggles and gloves in order to avoid serious personal injury when removing exhaust parts.
An accumulation of dirt and corrosion may make removing exhaust components difficult. A penetrating oil, used on the threads of the exhaust muffler inlet pipe clamp (U-bolts), can assist in the removal of these components.
Installing Exhaust Parts
Notice: Replacement of exhaust system parts must be OEM standard to ensure that the vehicle operates as designed.
Check for proper alignment when installing a new exhaust pipe/muffler or tail pipe, on any model. Misaligned parts usually cause rattles and noise vibrations in the exhaust system. When aligning the system, leave all nuts/bolts loose, until all parts are aligned. After properly aligning the system, tighten the nuts/bolts, working from the front to the rear of the vehicle. Replace all damaged exhaust system hangers, hanger brackets, and clamps, in order to maintain the exhaust system alignment.
Important:
• Refer to
Heated Oxygen Sensor Replacement
in Engine
Controls - 3.1L or
Heated Oxygen Sensor Replacement
in Engine Controls - 3.8L, when servicing the exhaust system requires
removing and replacing the oxygen sensors. • Apply the GM P/N 9985020 sealer, or equivalent, to all
slip-joint connections. • Replace the tail pipe when replacing the muffler. • Always use new nuts when installing the exhaust pipe to the exhaust
manifold. • Before installing the new nuts, clean the exhaust manifold stud
threads with a wire brush.
