Sierra 1500 WiFi issues at update

[Ahearn35]

My 2021 Sierra 1500 at4 LM2 hasn't been updated since August 2022.  Went to update today, connected to WiFi and tried to update.  Will attempt to search for update for about 10-30 sec. before saying connection unavailable and prompting me to check the internet connection or switch to a new connection.  Important to note, WiFi connection works fine outside of the update search - I am able to stream the radar, etc.

 

Have had the same issue in 2 different '21 Sierra 1500's (LM2 and the 5.3).

 

I've tried switching WiFi networks, switching WiFi bands, mobile hotspot(used to work), forgetting networks and reconnecting, restarting the truck, etc.

 

I feel that I've tried everything short of restoring to factory defaults or taking it to the stealership - neither of which I want to do.

 

Looking to see if anyone:

1.  Has had or heard of similar issue and how it was resolved

2.  Has any ideas if this this issue is on my end or GM's

3.  Knows where I can find the patch notes/update logs to check latest available for my truck.

 

TIA

[SEBFL]

Mine is showing the same error while connected to my home WIFI. Must be at GM's end

[repairman54]

You can get a corrupt over the air download and dealer plug in update may be needed.