Magnacharger offers a std limited 3yr warranty, but their offer an optional 3yr/36000 powertrain warranty for $200. So I'm sure they picked that up.
http://www.magnacharger.com/sc-hummerh2.htm
BTW - nice ride. I would replace the mirrors, but imo everything else looks good. As far as any factory warranty goes, GM will most likely not warranty the motor if anything happens. According to the Magnuson-Moss warranty act, the dealership has to
prove that the cause was a direct result of your modification. Check out my other thread:
http://www.elcovaforums.com/forums/s...ad.php?t=19910