Telematic Control Module needs replacement, but backordered with no ETA?! UNACCEPTABLE

We are currently going through the EXACT SAME ISSUE AND EXPERIENCE!!!  We purchased our 2023 Yukon Denali last July and in November our OnStar as well as Wifi and other features quit working.  These are one of the main features why we bought the vehicle.  We have had to take it to the dealer 5-6 times already and it's the same song and dance, the part is on back order with no ETA.  How is there not a recall already made by GM?  Then to top it all off, we had to have the Yukon towed last week because it would not go into gear due to this model.  So just like others, we are paying for a vehicle we can't use and an On-Star subscription that we can't use.  This is extremely inconvenience and frustrating because we don't even feel safe with the vehicle anymore.  Please GM figure our a solution for not just us but everyone else too!!