Sierra 2500 4WD V8-6.6L DSL Turbo (2007)
11. Remove the exhaust muffler. (2500/3500 crew cab shown, regular/extended cabs similar).
12. Remove and discard the exhaust particulate filter to muffler gasket.
Installation Procedure
1. Install a NEW gasket onto the exhaust muffler studs.
2. Install the exhaust muffler to the particulate filter.
3. With the aid of an assistant, support the exhaust muffler.
