I don't see anything about it being a buy back in the GM system. It says:
Complaint: 0590 - Features/Controls/Displays - Other issues
auto park assist where car parks for you is "all messed up" per salesman "it's a disaster"
Cause: 6579 - Module/Component - Shorted
park assist modules are not functioning at all due to short in power systems
Correction:
replaced front/rear park assist module and program
That was at 664 miles. Looks like it was sold November 25 and in for that on December 10. So, something clearly happened there. Maybe the dealer just took care of them rather than it being a Lemon Law kind of deal.
They also replaced the windshield due to some sort of HUD issue.
And then there is this also at the same time:
Complaint: 0021 - No Customer Complaint - Maintenance
CUSTOMER SATISFACTION VEHICLE PAYMENT EXPENSE
I've never seen that, not sure what that exactly means but may be the evidence of the car being turned back in by the owner? Not sure. Edit: I think myabe it means they reimbursed the customer for a payment? I see the car has 1800 miles now so it obviously didn't get turned back in at the time of these services.
It got a new cluster at the same time as this stuff too.
Given that it doesn't appear to be branded as a lemon I guess it is up to you to determine if the price they are selling it for is worth the craziness going on there.
Edit: There is some lag in the system so if it recently got turned in it is possible it just isn't showing up. Could be a buy back that would show up in CarFax, etc once it has had time to get there.