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KelShak Author

Level 1

22 points

CarPlay unresponsive after iOS 18 on GMC Terrain

My phone updated to IOS 18. As soon as I connected to my car, it started crashing my entertainment system. It has worked fine for many years and the only thing that has changed recently is the update. It will temporarily play a podcast before crashing. Apple Maps will crash it immediately. I tried to forget the car in Settings:CarPlay. I shut car and phone down. The car has the latest updates. I tried a different USB cable in a different port. CarPlay has been and is still enabled, etc. Is this a known bug? Is there a fix?

[Re-Titled by Moderator]

iPhone 13, iOS 18

Posted on Sep 19, 2024 7:23 PM

Top-ranking reply

C_TX

Level 1

44 points

Posted on Oct 13, 2024 7:46 PM

Hey!! I also have a case open with Apple that has made it's way to engineering and I wanted to let you know that engineering has confirmed it is a compatibility issue with GMC and the iOS18. Keep the phone call and give them all the diagnostics they need, but they told me hopefully the issue will be resolved within the next iOS update!

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38 replies

KiltedTim

Level 10

203,758 points

Sep 27, 2024 12:27 PM in response to KelShak

I’m seeing a number of complaints about this. Seems like some GM infotainment systems are having issues. You’ll probably need an update for the head unit.

Contact your dealer or GM headquarters.

bwanana

Level 1

8 points

Sep 27, 2024 12:32 PM in response to bwanana

Also have iPhone 13.

KiltedTim

Level 10

203,758 points

Sep 29, 2024 9:52 AM in response to Nicolesla

Nicolesla wrote:

2019 GMC terrain - same!! I’m thinking of reverting back to the previous iOS.

Unfortunately, you can't do that.

Oct 2, 2024 9:21 PM in response to KelShak

Same thing here, iPhone 15 Pro Max and iPhone 16 Pro both running iOS 18. Maps crashes immediately. Seems like music works until I hit the “now playing” button, but it might just be a matter of time.

Oct 31, 2024 6:55 PM in response to Darkskies84

Same - still no fix for me either with os18.1

Nov 3, 2024 12:29 PM in response to KelShak

My issue was that it wouldn’t connect to my vehicle by Bluetooth. Since the update it does! Yay!!!

Nov 3, 2024 1:24 PM in response to KiltedTim

I did contact my dealer and there is no update at gm

Dogcow-Moof

Level 8

36,557 points

Nov 3, 2024 9:38 PM in response to C_TX

The bottom line is it's GM's issue to fix if most other head ends have no issues (and they do not.)

CarPlay unresponsive after iOS 18 on GMC Terrain