Hello Forum Members, I am posting for my sister who reported the plastic under the dash of her 2001 Yukon XL is extremely brittle and breaks off easily. I assume this is on the driver's side of the Yukon XL since the passenger side is occupied by the climate control's ductwork. I am sorry I don't have more detail, the vehicle is not local. I will try to obtain a photograph. My sister believes this issue is related to age and is contemplating selling the Yukon XL because of its age. After several searches on Google and the Tahoe/Yukon forum, I was unable to find a similar issue. However, I did learn the brittleness may be due to the change in temperature or use of inferior material. Has anyone else experienced this issue? Did it compromise anything in regards to support of the dash or other components? I have not identified the exact panel. Therefore, I am unsure if the replacement would be expensive or time consuming. I suspect it is minor issue. Thanks in advance.