Yukon XL 4WD V8-5.3L (2011)
24. With the aid of an assistant, remove the insulator from the exhaust system hanger near the resonator.
Note: During removal, do not over extend the flex coupler as internal damage may occur.
25. Remove the muffler assembly.
Installation Procedure
1. If the vehicle is a Yukon XL, Yukon Denali XL, Escalade ESV, or Escalade EXT perform the following steps, otherwise proceed to step 6.
2. Lubricate the insulators where the muffler assembly hangers are inserted for ease of installation.
Note: During installation, do not over extend the flex coupler as internal damage may occur.
3. With the aid of an assistant, install the muffler assembly.
4. With the aid of an assistant, install the insulators to the exhaust system hangers (3, 4, and 5).