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Posted
On 1/29/2019 at 5:10 PM, robsieb said:

I believe I might have figured out a work around on this. I disabled the "Change with Buttons" option on the iPhone under Settings-Sounds & Haptics and tested it and the ringer volume remained where I had set it.  

Does this prevent the ringer volume be being decreased if you need to go to a meeting and push the side button to lower the volume?

Posted
Does this prevent the ringer volume be being decreased if you need to go to a meeting and push the side button to lower the volume?

Yes, so you could only change the ringer volume in Settings-Sounds and change the slider volume there.
Or if you’re in a meeting the vibrate switch would still turn off the ringer sound.
Posted
4 hours ago, 2016 Sierra Owner said:

What iphone do you have? Maybe it's fixed on the newer versions.

 

It’s not. We’ve all tried that. 
 

My 2019 has this issue. Even with the new v807 software they just rolled out. 
 

However, when I had a 2020 LT loaner, I had no issues with my phone connecting, syncing contacts, volume, etc. Very weird. 

Posted

I have same issue with 2019 GMC Sierra, ringtone iPhone XR lowers to nothing, have turned off change volume with buttons and issue persists.  Spent 1 1/2 hr with iPhone support and narrowed it down to settings within infotainment on GMC, got no such support from GMC.  Google indicates several with issue. 

Posted
I wondering if this is just a issue with iOS or does Android have the same problem?
Tom
After reading through, it didn't look like anyone responded to you. I have Android and experience the same issues described by my Apple brethren with volume being adjusted on the phone through truck changes and notifications not coming through the phone. Scouring the internet didn't yield a fix either. Seems we are in a waiting cycle.

Sent from my Pixel 4 XL using Tapatalk

Posted

Finally had time to play with the phone and truck today. Mine seems to work fine! It does lower the volume on the phone while connected either by Bluetooth or the cable and in apple play. However once I disconnect it goes back to full volume.

Iphone X, latest updates and in settings I have the change ringer with side buttons off, This is on a 2020 AT4 with the latest updates also. Not sure this will help anyone but my experience.

  • Like 1
Posted

The technology on the my 20 is so much different than my 18 that I just traded in.  The volume on the phone goes down and stays down after exiting truck which has caused me to miss many business calls! (Irritating)  It no longer reads my text messages to me while driving, instead have to look at phone unless of course I want to plug in for carplay.  Very dangerous looking at phone for text messages.  Wish I had known some of these things prior to buying, might have considered a different brand.  If anyone has a fix for these things please advise.  Thanks

Posted
The technology on the my 20 is so much different than my 18 that I just traded in.  The volume on the phone goes down and stays down after exiting truck which has caused me to miss many business calls! (Irritating)  It no longer reads my text messages to me while driving, instead have to look at phone unless of course I want to plug in for carplay.  Very dangerous looking at phone for text messages.  Wish I had known some of these things prior to buying, might have considered a different brand.  If anyone has a fix for these things please advise.  Thanks

I feel your pain about the text messages. GM removed that function with the 2020 models. Huge step backwards. I’ve called GM to complain but obviously did no good. Disappointing, especially since it’s as simple as a software update.
Posted

I experienced same issue of volume going down and staying down even after leaving the vehicle. Was missing phone calls and text messages. I followed the advice given in TSB # 19NA270 and no longer have this issue after turning off the "change with buttons" setting. I have an iphone xs with ios 13.3 and a newly purchased 2020 GMC Sierra. I too am very disappointed with GM for removing the text message feature from their infotainment system as was on my 2017 Sierra. With Apple car play plugged in one can get messages but it is ridiculous to be required to plug a phone in so one can receive text messages. And why GM still requires a cord for car play in 2020 is beyond belief. The phones have supported wireless car play for quite some time as well as many car manufactures. GM is way behind with their infotainment technology and needs to update their systems ASAP.

  • Like 1
Posted

My earlier post regarding the volume being turned down on my Iphone after connecting with the infotainment system in my 2020 Sierra is no longer valid. The fix I employed from TSB # 19NA270  worked until my system updated to v148. Neither work around mentioned in the bulletin now fixes the problem. If anyone has found a solution, please post.

  • Like 1
Posted

The way I see it GM is manipulating MY IPhone not their IPhone. GM through their internal app intentionally lowers my phone volume when I push the ignition switch to turn on the motor of the truck but when truck is turns off the app doesn't increase the volume back to its original setting and its caused me to miss several important calls.

If GM doesn't fix this issue and eliminate this function I'll be forced to execute a lawsuit against GM

Posted
10 hours ago, snork said:

If GM doesn't fix this issue and eliminate this function I'll be forced to execute a lawsuit against GM

And you will lose....

Tom

  • Like 1

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