Exhaust System: Service and Repair

REPLACEMENT

^ Refer to the illustration(s) when servicing the exhaust system.

WARNING: Always wear protective goggles and gloves when removing exhaust parts as talking rust and sharp edges from worn exhaust components could result in serious personal injury.

CAUTION: When lacking or lifting the vehicle from the frame side rails, make sure the lift pads do not contact the catalytic converter as converter nomad will result.

NOTE:
^ When removing exhaust components an accumulation of dirt and corrosion can make work difficult. Using a penetrating oil on the threads of bolts can assist in the removal of these components.
^ When installing a new exhaust PIPS, muffler, or tailpipe, on any model, check for proper alignment. Rattles and noise vibrations in the exhaust system are usually caused by the misalignment of parts. When aligning the system, leave all bolts and nuts loose until all parts are properly aligned, then tighten, working from the front to the rear.
^ Damaged exhaust system hangers, hanger brackets, and clamps should be replaced to maintain exhaust system alignment.
^ Apply sealer GM P/N 9985020 or equivalent to all slip joint connections.
^ When installing the exhaust pipe to the engine manifold always use a new seal and nuts. Clean the engine manifold stud threads with a wire brush before installing the new nuts.