jasondenali15

My Denali is still in the shop with the field engineer. Two weeks now. Will keep you posted.

UPDATE: My 2015 Denali has been with the dealer going on its second week. They removed the liner and did find the bars/bows not attached to sheet metal as per the service bulletin. They secured it properly, I am told. After more than 20 hours of time into the vehicle, the Denali STILL has the same problem. A GM "specialist" will be evaluating the vehicle next week. Moreover, the 2015 Tahoe I am driving has the SAME issue...just at a higher speed. The issue is a big one...and it's not going away. GM needs to do the right thing by those of us literally getting sick driving this vehicle. I look forward updating you with positive news from GM as they work through this process. I will continue to be patient. I am confident they will do the right thing. Will keep you posted.

The roof sheet metal is coming off of the crossbars on the frame. The inside liner would obscure actually seeing it. You can just hear and feel it. On a side note, I am in a 2015 Tahoe for a rental and notice something similar...not as bad as mine. I am starting to think this is a bigger issue for 2015s.

Just received a copy of the GM Service Bulletin. Here's the deal: "The body booming issue may be more noticeable when the engine is in V4 mode." Further, "These concerns could be caused by the roof sheet metal no longer being attached to the roof bows (1). On the trucks with a sunroof, it may be noticed that the rear edge of the sunroof glass is considerably lower than the roof (2). This is due to the roof sheet metal being detached from the roof bow directly behind the sunroof opening (3)." My Denali is at the dealer now and they noticed the sheet metal was no longer attached. They are fixing it now. Will keep you guys posted if it helps. I am not taking my vehicle back from them unless this is fully resolved. The pressure is so bad, I am getting headaches driving it. I am a business owner and do not have time for this nonsense. $73,000...

HI All, First time here. I have had my 2015 Denali for two months and this has been driving me crazy since the first drive home. Anyway, GM replaced 2 of my 22" rims and thought they were not circular. Problem did not go away. So today, they took it back and mentioned the issue with the roof too. I guess there was a GMC service bulletin issued on 29 August regarding the "droan and pressure" sensation. Does anyone have access to this document? I would like it for my records. Will be picking it up tomorrow...will keep you posted if it's resolved. By the way, I have found the problem to be worst at 38-50 mph. 43 mph being the worst speed. I am just so glad I found this forum...I have been going nuts!