hi i just got a lux amp installed on my 2004 H2 the amp was from an escalade i think so now i need the steps to do the programing of the amp on the tech2 , im also swaping my old analog Onstar unit with a newer unit from a junkyard and was told that i need to do a vin relearn otherwise the light may stay red and onstar will see my truck as the truck the unit came from so i also need the info on how to perform the vin relarn ... if anyone can help please let me know ..