Sierra 2500 Denali 2WD V8-6.0L (2011)
5. If equipped with a 4.8L engine, perform the following steps, otherwise proceed to step 7.
6. Lubricate the 3 insulators where the muffler assembly hangers are inserted in order to ease removal.
7. With the aid of an assistant, remove the insulators (1, 2) from the front and rear muffler assembly hangers.
8. Remove the insulator (1) from the intermediate muffler assembly hanger and remove the muffler assembly.
