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Glad to hear you like yours, KinkyDuramax. I've had two with Bose systems at this point; a '20 Denali Ultimate and a '23 Denali Ultimate. I loved the sound system in my '20. By comparison, my '23 system was terrible. After upgrading the speakers I am now doing a new 12 ch amp, DSP, and stealth box sub./amp.

Thanks, that did the trick. I was so sure it was a defect that I didn't consider it might be a settings change.

I've got an issue that is really quite irritating. When I start my '23 Sierra Denali Ultimate, right after connecting to my phone via Bluetooth, Android Auto connects and immediately starts Spotify. I then have to go into the audio and switch it back to FM or Sirius XM or whatever. Is there a setting somewhere that I can undo?

@shewstring I got the following: Helix CI3 W200FM-S2 for the front doors. 8-inch midbass/woofer. Helix CI3 K165.2FM-S2 component set for the rear doors. 6.5 inch/1-inch tweeter component set Helix T20FM-T1 1-inch tweeter for the pillars Blam LFR52 2-inch driver for the 3 dash speakers. Vastly improved sound but not enough of it, despite them testing and matching the impedance all around. Therefore, I will be getting a Helix V12 12-channel amp next. I also have the Kicker 10-inch subwoofer.

No support for bass knob.

Which trim level? 72mm (3.5 in) sounds pretty big. I just replaced the speakers in my '23 Denali Ultimate and the dash speakers were 2 inches, including the center dash speaker.

Hey Justinshort, I didn't see a knob in mine. Kicker knobs are fairly cheap to buy on their own but the next question is, is there a port to plug the knob in? I don't have my truck to verify at the moment. I'll be getting it back later in the week and report back.

Great question. I get the one about contact names every time also

If you do, I might be interested in buying one from you. Or at least pay for the file so I can print it here. I just installed the Lock'er Down in my '23 as well.

On the recommendation of Diamond817 I also got the Hankook Dynapro in 305/40r22. Great looking tire tread, not a lot of road noise, and the extra tire width suits the truck well.

Can you not ship using tirerack.com?

I've been looking around and saw some info on the speakers in Sierras and Silverados, but not necessarily specific to the Denali Ultimate. I know what size speakers go on the rear doors, front doors, and dash. What size speakers are on the door pillars? Is there a center speaker? What size is that? Any others? I saw something that said the Denali Ultimate has 12 speakers. I don't count that many grills...

No pics yet but I have the Hankook Dynapro AT2 tires in 305/45r22 on my '23 Denali Ultimate. No lift. It's the size they should have put on the car, in my opinion.

I'm taking mine over to get a professional install done but I never even thought about a DIY ceramic installation...

I have this issue as well. I tried putting the phone in top first and having the phone unlocked when I placed it on the charger. Better, but the issue is still there intermittently. Next step is to check for an update and maybe see if the catty corrner thing helps.