Anyone lost their fuel gauge instrumentation or heard of an ECM update?

[KC Desert]

My 2020 GMC 2500HD fuel gauge suddenly dropped to zero the other day and the range indicator had - - - displayed. I took it to the stealership and it fixed itself along the way with no error codes. The stealer says there is an ECM update that *may* also fix this. Anyone heard of that? I think they are BSing me here.

 

They are also replacing the rear Bose speakers and fixing the seatbelt retractor which is broken and falls off and a few other stupid things. 

[sdelam]

Last time I took mine in for water intrusion they said there was a service bulletin related to fuel gauge. Don’t recall which on it was. 
 

[KC Desert]

26 minutes ago, sdelam said:

Last time I took mine in for water intrusion they said there was a service bulletin related to fuel gauge. Don’t recall which on it was. 
 

Thanks 

[KC Desert]

Anyone else?

[KC Desert]

Dealer told me there is no fix, come pick up the truck. I would rather ditch it on them and say if you cannot even guarantee that my fuel level is accurate....I swear. GM.