Removal Procedure
Caution: 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.
When removing exhaust components, an accumulation of dirt
and corrosion can make work difficult. Use a penetrating oil on the threads
of the U-bolts in order to assist in the removal of these components.
Installation Procedure
Notice: Replacement of exhaust system parts must be OEM standard to ensure that
the vehicle operates as designed.
Important:
• | When jacking or lifting the vehicle from the frame side rails,
make sure the lift pads do not contact the catalytic converter or damage to
the converter will result. |
• | When servicing of the exhaust system requires removing and replacing
the oxygen sensor, refer to Engine Controls. |
• | Apply sealer GM P/N 9984226 or equivalent to all
slip joint connections. |
• | Replace the tailpipe whenever the muffler is replaced. |
• | Always use new nuts when installing the exhaust pipe to the engine
manifold. Clean the engine manifold stud threads with a wire brush before
installing the new nuts. |
- Rattles and noise vibrations in the exhaust system are usually caused
by the misalignment of parts. Check for proper alignment when installing a
new exhaust pipe, or muffler and tailpipe.
- When aligning the system,
leave all bolts and nuts loose until all parts are properly aligned.
- Tighten the nuts and bolts, working from the front to the rear.
- Replace damaged exhaust
system hangers, hanger brackets, and clamps to maintain exhaust system alignment.