2023 Denali ultimate dash rattle/sound

[jjobev]

I have 2023 Denali Ultimate. I am noticing a sound coming from the center of the dash when I go over bumps. It sounds like the noise you would get if something is loose and bouncing in the cargo area…only from the dash. My guess is the center channel speaker. I already had to have the drivers door panel replaced for a rattle caused by too much space between the panel and the window. The dealer fixed that problem but said they couldn’t hear the dash issue when they test drove it. At the time I wanted the vehicle back to see if door issue was resolved and didn’t have time to deal with the dash. Will have the dealer check it out again but thought I would check here to see if anyone else has had similar experience. I am not crazy about the idea of taking the dash apart. Thank you

 

[WalleyeMikeIII]

I have 2023 Denali Ultimate. I am noticing a sound coming from the center of the dash when I go over bumps. It sounds like the noise you would get if something is loose and bouncing in the cargo area…only from the dash. My guess is the center channel speaker. I already had to have the drivers door panel replaced for a rattle caused by too much space between the panel and the window. The dealer fixed that problem but said they couldn’t hear the dash issue when they test drove it. At the time I wanted the vehicle back to see if door issue was resolved and didn’t have time to deal with the dash. Will have the dealer check it out again but thought I would check here to see if anyone else has had similar experience. I am not crazy about the idea of taking the dash apart. Thank you

I've got a plasticy type rattle from the center stack too...sometimes its more like a squeak...its def plastic on plastic type noise...only on bumps. Been getting a bit worse as the weather is warming up here. It's on my list to take in to the dealer, but I don't hold high hopes. I can mimic the sound a bit w/ light pressure on the piano black trim around the AC controls, but holding pressure there doesn't make it stop when I hit bumps.

I need to get someone else to drive and really get down there to hear it...but it is so dang infrequent that its going to be tough...let me know if you figure it out.

 

[jjobev]

I've got a plasticy type rattle from the center stack too...sometimes its more like a squeak...its def plastic on plastic type noise...only on bumps. Been getting a bit worse as the weather is warming up here. It's on my list to take in to the dealer, but I don't hold high hopes. I can mimic the sound a bit w/ light pressure on the piano black trim around the AC controls, but holding pressure there doesn't make it stop when I hit bumps.

I need to get someone else to drive and really get down there to hear it...but it is so dang infrequent that its going to be tough...let me know if you figure it out.

If anyone has had the big 5 point harness car seats, the head support in those would rattle when you’d hit a bump. That is what it sounds like to me in the dash. Like something in the dash can move around enough to make the sound. I don’t know how easy it is to pop off the grill around the center channel speaker. Just something to deal with that I don’t feel like dealing with.

 

[Tahoe14]

I had a plastic on-plastic squeak in my 2015, sprayed some silicone spray on the area of the squeak, wiped off the access which does not hurt the plastic, and problem solved.

 

[jjobev]

I've got a plasticy type rattle from the center stack too...sometimes its more like a squeak...its def plastic on plastic type noise...only on bumps. Been getting a bit worse as the weather is warming up here. It's on my list to take in to the dealer, but I don't hold high hopes. I can mimic the sound a bit w/ light pressure on the piano black trim around the AC controls, but holding pressure there doesn't make it stop when I hit bumps.

I need to get someone else to drive and really get down there to hear it...but it is so dang infrequent that its going to be tough...let me know if you figure it out.

I love this vehicle but it the most expense with the most dash rattles of any vehicle I've ever owned. I recently had 2021 Tahoe premier and in the last two months have rented a premier and LT suburban with no rattles.

I have tried to slide foam in places like where the dash contacts the AC vents to see if it helps and I could isolate the problem. It makes a slight difference on the more traditional rattling sound but I am still getting very distinct rattle/clunking sound to the left of the center channel speaker when I go over bumps at speed (really bad on interstate driving when going over uneven road). I also slid some foam into the space where the wood tray that covers the wireless charging space slides back into the center stack. The dash thumping is enough to make me consider finding a different vehicle. But before I do that I am going to give the dealer a chance to see if they can fix it because I love the vehicle otherwise. I tried to tell myself to live with it, but I can't do that on a vehicle like this. As a reminder I already had the drivers door panel replaced because of rattling and there being too much space between the window and door frame. It isn't perfect but I have moved on from that unless it gets worse.

I have my first oil change coming up soon and am going to get the service manager to ride with me.

Just checking to see if anyone else has had this as I am not crazy about taking off the dash.

 

[Tahoe14]

You take a chance of having the service tech scratch or damage the trim if they start taking things apart, there are horror stories on this forum.

 

[WalleyeMikeIII]

You take a chance of having the service tech scratch or damage the trim if they start taking things apart, there are horror stories on this forum.

If they do that, you have a convo w/ service advisor or service manager and make them get new part to replace the damaged one.

 

[like2detail]

My 2021 was like that as well, rattles in the console, rattles around the infotainment, rattles around the center channel speaker, rattles in the door panels... was able to get the local dealer to print me off a ton of schematics for the dash and door panels to make disassembly easier than trial and error. Over the course of a year at various times I pretty much removed every trim piece on the dash and put foam tape at a bunch of plastic contact points. It's dead quiet now, not a single rattle. I just tried to be patient, masking tape things up and use the proper plastic trim removal tools so no damage was caused.

The only noise I haven't been able to fix is a wind driven rattle in my drivers door/window area that only happens below 50 degrees. It's summer so I'm enjoying the quiet while I can!