Spare me your BS and your vendor loving crap. I also said I have Corvettes and it's the same issue with them. Here is a link from a REPUTABLE after market tuner
http://www.stage3motorsports.com/Stage-3s-Stance-Tuning-Your-Vehicles-Warranty.html
From that page...
"Now, you may hear something or other about being protected by the
Magnusson-Moss Warranty Act of 1975, which you technically are, since the Act requires a burden of proof from the manufacturer or dealer that a particular aftermarket part, accessory, or tune led to an engine failure or other issue. That being said, Ford and dealerships have much more money and a much larger legal team than you, and a drawn-out court battle with a judge that may or may not understand some of the finer points of the aftermarket or tuning will more than likely cost you more than new motor and still leave you footing the bill for full crate engine or long block if something catastrophic did in fact occur. So, while you're technically "protected" to some extent, the real-world practical issues leave a lot to be desired. Still, if you put a tune in your vehicle, but have a problem with something that is totally unrelated to the tune or powertrain (i.e. your window regulator, door locks, A/C, power steering, etc.), then those repairs would be covered."
Exactly. You want to roll the dice? You want to take the word of a forum vendor who is only interested in the next sale? Go right ahead...hope it works out for you. Just don't start posting on this forum about how evil GM is when they deny your warranty claim.
Spare me your crap about "this is Chevy and not Ford" it's the same thing.