Has anyone figured out how to fix the missing speed limit number in the HUD and instrument cluster on a 2022 Yukon? I am having the same issue. It just shows a white speed limit sign with no numbers. Thanks.
Had same thing occur on my 2022 highcountry. I found this in the owners manual - "Speed Sign : Shows sign information, which comes from a roadway database in the onboard navigation system, if equipped. The sign will show “− −” when offline maps are unavailable". If you go into Google Maps...settings...you should see something on downloading offline maps. After this mine showed backup. Interesting side note...if you have multiple profiles (like husband/wife) you will have to download the offline maps for each profile.
I called onstar and was transferred to tech support. Tech support said I needed to be transferred to GM and then onstar hung up on me. Then like 3 days later it started working on its own. Most of the time.