Same issue as above, same outcome. My wife called the Dealer, who initially told her she would have to pay for the tow and a diagnostic fee, then parts and labor to repair.
She called me.
In the meantime I found this forum and sent her the link to this thread, showing now 11 pages of similar issues that Chevy apparently has no knowledge of and has never heard of before.
Told her to go back out, see if the messages were still there.
And they weren't.
SO yeah, thumbs up to the forum people here who gave me the idea to re-check before getting it towed (which was covered under our warranty anyway) and looking like a fool with no codes/messages showing up once it got there.
I drove it last night, no issues, no indication anything was wonky.
Very curious.