Yeah, because in SI for psb #00-06-04-003B which covers installation of the mpfi unit after unsuccessful cleaning. There is no mention of programming required neither in the listing in the GM parts catalogue which for that matter only shows the mpfi unit and no listing anymore for the original poppet injectors. Being in this for so many years, in the last couple of years you really see the "planned obsolescence" so obvious for vehicles. Newer VIP and Global A to a certain extend system makes for a great difficulty down the road when you can't get one of many replacement modules due to being discontinued, lifetime back order and can't swap modules between vehicles, i.e. put in a used one and program it