Yukon XL 4WD V8-5.3L (2011)
5. If the vehicle is a Suburban, Yukon XL, Yukon Denali XL, Escalade ESV, Escalade EXT or a Avalanche, remove the exhaust heat shield nuts and
heat shields, as required.
6. Remove the rear floor panel exhaust heat shield nuts and heat shield, as required
Installation Procedure