OMG!!!! FINALLY!!! I am so glad I found this page!! I bought my 2021 Yukon SLT in November of 2020 and had it at the dealership 8 days later because my left side speaker went out. I also have the Android Auto running (have a Samsung S9). It started with Facebook or Instagram videos streaming through my bluetooth. Now it happens intermittently when I use the talk to text feature on my phone through my bluetooth.
As of today (8/17/21) I have had my Yukon at the dealership FIVE times for the issue. I have 'replicated' the issue (their word, not mine) for the service department twice and have it on video. Either they tell me they cannot replicate the issue or they have conducted the latest Technical Safety Bulletin (TSB), updating my computer systems, and were able to confirm the speaker is now working. Well, it still isn't!
The first four times I have taken in my Yukon I took it to the dealership I bought it from. After speaking with a Lemon Law attorney, he suggested taking it to another dealership just to make sure I wasn't getting the run-around at the original dealership. When I took it in today, the service advisor told me the issue was most likely my 'old' phone causing a communication problem with my car's bluetooth. He told me there was nothing they could do to help me today and to try pairing my vehicle with another phone to see if the speaker went out again. When I pushed back and asked how my phone/bluetooth connection could cause the speaker to go out he told me he didn't really know the specifics but that was probably the issue. Didn't even look at my car, my videos, or my offer to show him in person what was happening!
I have opened a complaint via the GMC website and received an email back today stating they will contact me within the next 48 hours. Not holding my breath...I am so frustrated and pissed about buying a $75,000 car and not have it work properly. Even worse is knowing I keep getting blown off by the service departments.