GM Serial Data Gateway Module and Radio N242435631 Service bulletin - 24 Yukon

[JTGZ71]

So far, so good with my update. I believe the audio cut-outs on or shortly after start-up seem to be gone. But will give it a couple more days before I declare victory...

 

[TheSwan]

I had posted about my radio update. The radio would mot reboot. So GM ordered a new radio and just put it on 3 days ago. So far it is working. I took it in on Sept 3 and finally fixed on the 27th. Not fun driving it without the radio and the info center not working. Only the backup canera was working until they got the new radio installed.

 

[BacDoc]

Ok so since this “update” I have had to sign in to carplay a lot more, it could be coincidence but it seems like my phone is not connecting as well as before. No trailer app issues and once connected my carplay seems to be working fine.

Another issue that I noticed is with my powered running boards. A couple times since the update the steps didn’t deploy when opening door. Pulling out the obd plug and plugging it back in fixes it but it has happened twice now since the update. Next time I will bring it back to the dealer!

Anyone else have any issues with this update?

 

[Jigitz]

I had this update done and after that I have had about 20 different codes pop up and my camera on my right side mirror stopped working for a few days after the update. It came back so I did t bring it in.

My CEL came on on Thanksgiving and I brought it in and that’s when they found all of the codes. I found a thread on the gm-trucks forum and it’s 13 pages with complaints some of which are tied to the infotainment. It could have just been done poorly by the dealer too maybe it all of these issues only started with the update.

My car is with the dealer now and they are unsure of how to resolve this. I’m thinking the update was applied and it was corrupt and/or there is some issue with the code itself. It’s a 24 Tahoe High County Diesel.

 

[WalleyeMikeIII]

I had this update done and after that I have had about 20 different codes pop up and my camera on my right side mirror stopped working for a few days after the update. It came back so I did t bring it in.

My CEL came on on Thanksgiving and I brought it in and that’s when they found all of the codes. I found a thread on the gm-trucks forum and it’s 13 pages with complaints some of which are tied to the infotainment. It could have just been done poorly by the dealer too maybe it all of these issues only started with the update.

My car is with the dealer now and they are unsure of how to resolve this. I’m thinking the update was applied and it was corrupt and/or there is some issue with the code itself. It’s a 24 Tahoe High County Diesel.

My money is on a bad battery in your truck. Perhaps they didn't put a battery tender on it when updating? Perhaps you just got bad timing. With all those Comm errors...my guess is low voltage.