Evidently not.
It covers aftermarket mods.
It covers any attempt to void a manufacturer's warranty due to post-sale modifications or the use of aftermarket parts. It is extremely broad.
You can't tinker with software settings and other non-maintenance service items.
Incorrect. You can't modify firmware related to emissions, but that is because it is illegal under the Clean Air Act. It has nothing to do with your warranty.
It is also true that there are limits on other firmware modifications if they involve encryption under the DMCA(although this is in dispute). But, again, that is a separate law. It has nothing to do with your warranty. YOUR WARRANTY CANNOT BE "VOIDED" DUE TO AFTERMARKET MODIFICATIONS.
GM just went thru with this on people monkeying with their corvettes. They got tired of paying for blown engines. So if tampering is detected, they blacklist you in their dealer system.
They can stonewall you all they like. Winning a case is really expensive and they know it.
If they tell you they'll void you if you change the BMS software, they mean it. You really think you are going to sue over a $5,000 part? Who's going to take that case unless they get paid by the hour. My lawyer is around $500 an hour for office, double that for court.
Did you even read what I wrote about spec lawyers? They DO get paid by the hour. It is just that those hours are collected from the OEM (assuming that they lose, which they will if your mod didn't cause the fault). As I said already, in practice, the OEM will generally settle just as soon as you make it clear that you and your lawyer are serious, precisely BECAUSE they know how expensive it is. Do you really think that this hasn't been thought through?
Your Corvette friends are irrelevant, since (by your admission) they are blowing up their engines. Damage that you cause is not covered by your warranty.
There is a whole industry of lawyers who make their money taking these cases. As I said, the system works very well.
I repeat: Please do not spread blatant misinformation when the truth is readily available to anyone taking the time to look it up.