Installation Procedure
Courtesy of GENERAL MOTORS CORP.
- Using a wire brush, clean the contact area of the intermediate pipe for the muffler.
- Install the left muffler (1) to the hangers (3).
- On the 7.0L engines, connect the vacuum line to the muffler assembly.
- Install the intermediate pipe. Refer to Intermediate Pipe Replacement (6.0L) or Intermediate Pipe Replacement (7.0L) .
- On automatic transmission equipped vehicles, install the rear suspension crossmember if lowered to provide clearance for removal of the exhaust muffler.
- Lower the vehicle.