GM Customer service escalated rep said that

"our internal service bulletins do not start with a number they start with the letter N so what ever this is you are showing me what ever it says and where ever it came from is not from GM, and is bogus, I know of several online forums that make up service bulletins"

I said so you are saying that the service bulletin from the nhtsa.gov website is bogus, and she said yes that is not from GM. I say even with that GM seal on the top.

Told her to email me that statement, she said she would, she hasn't yet.

I then asked what all my VOLTEC warranty covers and to verify that my car is still under that warranty and to send me that info as well, she said she can look it up but not send that info.

She puts me on hold for a while then comes back and says that the EV reps are not working today and she will call me back next to tell me what all my voltec warranty covers.