I am with Hummer of Marietta--- We do alot of custom h2s 90-95% , Any how SMA has alot of aftermarket parts some authorized by gm some are not. We have a 03 adv series with a complete breathless kit outside and inside and under the hood. has the SMA air raid intake on it runs about 20 degrees cooler and gets 17 more horsepower.sounds very crisp as well...
anyway all our aftermarket is covered by the full factory warranty.(even ent. systems )..
I did find out a new fact the other day some of you may already know but here it goes--if you have size 18 or bigger tires on your h2 you have no warranty..
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