Muffler: Service and Repair

Muffler and Tailpipe

Removal and Installation

CAUTION: Do not use oil or grease-based lubricants on the insulators. They may cause deterioration of the rubber.

CAUTION: Oil or grease-based lubricants on the isolators may cause the exhaust hanger insulator to separate from the exhaust hanger bracket during vehicle operation.

NOTE: The production muffler and tailpipe assembly is a one-piece design. The service muffler and tailpipe assembly is serviced with two pieces.





1. WARNING: The electrical power to the air suspension system must be turned off prior to hoisting, jacking or towing an air suspension vehicle. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations.

Turn the air suspension switch off.
2. With the vehicle in NEUTRAL, position it on a hoist.





3. Remove the clamp.





4. Using a suitable exhaust cutter, separate the muffler from the tailpipe.





5. NOTE: Check the insulator for wear or damage. Install a new insulator as necessary.

Detach the insulator and remove the tailpipe.





6. NOTE: Check the insulator for wear or damage. Install a new insulator as necessary.

Detach the insulator and remove the muffler.








7. NOTE: Install new exhaust fasteners. Do not tighten the fasteners until all components are assembled.

NOTE: Alternately tighten the fasteners to specification, to draw flanges together evenly.

To install, reverse the removal procedure.