Has anyone installed this on their H2. I bought one from 4x4 Trucks and asked them to install it while I watched (because I can mess up anything). It would not copy the factory setting so it would not install. The recommended I take it back to Hummer and get it "re-flashed". I did. Took it back and it still will not copy factory settings. Anyone have this problem? Cure? Is it a way of telling me "don't do it?"

 

I haven"t had any problems with mine. are you sure that the unit you purchased has not been used on another vehicle? If so it would have that vehicle's factory setting in it and therefore could not load yours. Try lew at (diablo.help@gmail.com) he did a custom tune for me and is very knowledgeable, he could probably help you more than me.