Chris Burch

Parts finally came in, just dropped it off this morning to have the HMI module replaced. Hopefully this will cure my radio blackout issues.

Just picked my truck up for an unrelated issue, but I asked about the radio and parts availability. Was told they have heard nothing! parts still on national back order.

Well I too am in Central Texas, so the heat might be a cause, but not the whole issue. It will be interesting to see what GM does to fix this. I have a new HMI Module on order for mine, but they are on national back order, so who knows when they will become available?

Just got a call from the dealer, they found the HMI module and its associated data cable to be bad. They want to replace both, but these modules are on national back order and GM has no ETA on when they will be available. So anyone having this issue, advise the dealer to have these parts checked.

Dealer did a the software update and said it was fixed. Radio blacked out and dropped my Bluetooth while I was still in their parking lot. Back in it went! Had a GM Tech come out to look at it and this was what I was told. "The update is really all we can do, however if there are trouble codes stored for an error, then we can replace the radio." So it sounds like GM has no clue what is going on with this issue.

Dropped my truck off this morning. Advisor mentioned something about a software update, but I am not holding my breath.

Radio locked up and screen blacked out again this morning. I called OnStar and they couldn't do anything about it since it has occurred more than once. I will be taking it next week after the holiday. I will post up with the solution.

Add my 2016 Sierra to the list of radio black out screens. Mine has done it while on a Bluetooth call, and when the radio was on. Completely shuts down and cant do anything till you shut the truck off.

I am having the same problems with my 2016. Screen repeatedly goes black and when it does it drops the Bluetooth connection to my phone. Very frustrating!