You said re-authorized Sirius. Does that mean

you:

Deleted the Sirius app from Sonos

Deleted the Sonos app

Deactivated the Sirius skill in the Alexa app

Updated your device (if required)

Reinstalled the Sonos app

Upon opening the Sonos app selected Join an existing system 

Signed into Sonos with your credentials 

Reinstalled the Sirius app 

Reenabled the Sirius Skill in the Alexa app

Tested Sirius again for streaming 

I only deleted Sirrus from my Sonos Application as a music category.   Then re-added it and authorized account.   I did not touch either application on my phone.  Why would deleting the sirrius app on my phone impact Sonos integration, that sure seems like overkill and that you don’t really know the issue. 

​@Chad E KC 

Those are basic trouble shooting steps.

Here’s an AI generated solution from the web:

If your SiriusXM channels aren't showing up in the Sonos app, it likely means you need to re-authorize your SiriusXM account within the Sonos settings, as this is often the primary cause for missing channels; you may need to remove your SiriusXM profile completely and then re-add it to refresh the connection properly. 

Here's what to try:

• Check your SiriusXM subscription: Ensure you have a streaming plan that allows access to SiriusXM on Sonos. 
• Reauthorize your account: Go to Sonos settings, navigate to "Services & Voice" > "Music & Content" > select SiriusXM and choose "Reauthorize Account". 
• Remove and re-add SiriusXM: Delete your SiriusXM profile from the Sonos app completely, then re-add it using your login credentials. 
• Check for Sonos updates: Make sure your Sonos app and system are updated to the latest version. 
• Restart your Sonos system: Try restarting your Sonos devices to refresh the connection. 

Did you by chance see any similarity to my suggestion 

However, If that doesn’t work you need to open the SiriusXM App on your device (not inside the Sonos app) and add channels to library there. Then go to your Sonos app and open Sirius streaming application. Under Library tap “All” or “Channels” and you’ll see your recently added channels. You can also add channels by category such as Shows & Podcasts / Artists & Hosts / Teams & Leagues. 

Good Luck to resolve your issue.

Your advice helped me find the problem.   For some reason my online account was messed up on my Sirius XM account.   I fixed that and now it works.   Thank you!!!

It would be a heckofalot simpler if the app would simply allow you to tune a channel number.  But, I was finally able to dig around the app and find the channel I needed.  It was not available in any of the simple selections.  I had to bring up the SiriusXM service, and browse to the channel that way.  If I know which channel I want, why do I have to dig around in the app to find it, Sonos?  Just let me enter the damn channel number.

I’ve generally not had problems with the new app in a while (it *was* junk for a long time).  But the UI is still a way-too-busy mess.  The popular UI paradigm these days is minimalist/simplistic.  Why am I forced to dig through channel guides for multiple services when I know what I want?  Sonos?

​@MushyMiddle 

Are you saying the channel selection search is a feature you had before and now it’s gone; or are you asking a feature request?

Remember how you can tune your TV with a channel number?  Why do I have to search for something I already know?

​@MushyMiddle

Yes, I remember; but you didn’t answer the question . 

However, in any event when on the Sonos App home page if you enter the number “7” (for example) in the search field the app will search “Your Services” and show every station or broadcast with the number “7” by service (i.e. SiriusXM, AppleMusic, Spotify, Tidal etc).

If SiriusXM is the only service you have in the Sonos App then the choice is narrowed to only a few hits. That’s as simple/easy as it gets.

If you know the channel’s name, doe the search function not help? Could you ad it as a favourite?