2021 LT trail boss Infotainment sound issue

[GearheadSS]

Mine has this issue as well.  It's annoying as hell. I always know when it has reset because the radio will be turned off when I get in the truck.  I thought it might be something related to Android Auto but I've eliminated that as it will do it even if I never have my phone connected. 

 

I checked and there is an infotainment update from GM that was released on 3/30/21.  It covers IOS and IOT radios, not the IOR for the Customs though.  I'm wondering if it might actually work though.  

 

Anyway, bulletin # is 21-NA-053: Radio Software Version V155 Update.  Only for 2021 model year according to the bulletin.

 

Might be worth having the dealer perform the update and see if it helps.

Edited April 19, 2021 by GearheadSS

[Silla]

My '21 custom is doing this, very annoying!!! So how do we fix this was going to dealer but now reading this just seems like a waste of time!!

[ScottD2021]

My 2021 GMC Sierra 1500 is doing this also. I cant believe something so simple appears to have no fix.

 

[Vickie Van Ryn]

Hello my radio on start up the volume is all the way turned up. It hurts my ears. Has anyone found an answer yet. Also, the screen on startup is always on setting. There is no setting to change it to stay on music. Never had this problem with my 2019 infotainment system.  This is driving me crazy.

 

Is there anyone with the answers?

[Drewt83]

FACTORY RESET

Browse the radio menu's to Settings > System > Return to Factory Settings

2) Select Reset Vehicle Settings

3) Wait to reset

4) Select Erase Settings and Personal Data

You will need to reset your stations etc.

I did both options listed and 

the radio has kept settings since doing this

[Lexie]

Has there been any updates on the IOR system update for the 2021 custom trail boss??

[darrin gargus]

My 2021 trailboss does the same thing. Every time I turn off truck,  my volume, bass, treble and mid all reset to zero....every dam time

[Gray Fox]

On 5/24/2021 at 8:02 AM, Lexie said:

Has there been any updates on the IOR system update for the 2021 custom trail boss??

Software update V155 is supposed to fix over 100 known infotainment issues. It is only available at the dealer and supposedly only works on 2021 models. By the way, GM wants to charge you $140 for this “fix”.  Even though it is under warranty. 

[Timbo2]

I had the same problem. Do a factory reset and shut off the truck and pull the key, open the door and wait a few seconds. Then restart the truck and power up the Infotainment head unit, redo all settings.

This fixed the issue, hasn’t reset at all since I did it and it been about a week and a half.

Hope this helps

[21trail]

You might check with your dealer again. I had the same problem. I took mine in for the first oil change and asked about it. The fix was released on the 13th of this month. Took about an hour for them to do it and there was no charge 

[Issac]

I have a 2021 Trail Boss Custom Silverado that has the same issue, how do we fix it?  Anyone...

[SS22]

Just bought my 2021 Silverado Trail boss only has 500 miles on it the volume is stuck at one level and I cannot change the settings on the base Treble or fade will this restart if I shut the truck off and let it sit a few minutes?

[Speedemon369]

all you need to do is set up your onstar then all of your radio settings will be saved

[Toscano1605]

On 3/14/2021 at 9:45 AM, kmeleon said:

I see. I was going to say when I left the dealer my truck radio was still in demo mode and everything I would turn the truck off it would erase any settings and revert back to am radio. Doesn't sound like the issue though. Sorry I couldn't be more helpful. Good luck! 

I Am having this issue. How do I get my radio out of demo mode?

[kmeleon]

16 hours ago, Toscano1605 said:

I Am having this issue. How do I get my radio out of demo mode?

I think you can turn it off in the settings. I don't recall exactly, try searching thru the menu settings and you should find it.