Yukon XL 4WD V8-5.3L (2011)
16. Loosen the catalytic converter to muffler clamp nut (1).
17. Separate the hanger.
18. If the vehicle is a Yukon Denali or Escalade perform the following steps, otherwise proceed to step 26.
19. Lubricate the insulators where the muffler assembly hangers are inserted in order to ease in removal.
20. With the aid of an assistant, remove the insulators from the exhaust system hangers (4, and 5).
