MJS77

I had a Yukon XL on order for approximately 7 months and it was stuck in 1100 status. Apparently the dealer had no allocation and I just pulled the order. I test drove a 2015i Yukon XL Denali with Open Rd / Premium / Enhanced Security Pkg / 22 inch wheels at another dealer about 1 week ago. The vehicle had a build date of 12/14. Drove it for about 20 minutes and developed pressure in my ears which lasted about 2 hours before clearing up. I equate it to like being in an airplane on a flight. I just test drove an Escalade ESV (Luxury - build date of 12/14) today with my wife and while the pressure was not as bad as the Yukon XL, it was still present. I guess it was a blessing that my order was not picked up. This is a legitimate issue with these vehicles and have opted not to move forward with a purchase at this time until the underlying issue/cause is determined and fixed. I want to thank everyone who has contributed to this forum and the information you provide is very valuable. I hope there is a fix soon for everyone that has made a purchase of these vehicles and the situation is corrected. I think the vehicles are outstanding and drive very nice otherwise. I did not experience any issues with "booming noise", just pressure in my ears...