My 06 is currently in the shop at a local Chev. dealership. It lost an injector (which was impressive) on the road. After they diagnosed the problem, I was told that GM no longer manufactures these injectors, they only refurbish the old ones. While I find that hard to believe, here is the biggest kicker, there is a 3 week back log in recieving a new/refurb one. The service manager tried to get one from a local injector shop that specializes in rebuilding them, but the last one they had was sold a few hours earlier. Am I the only one that is suspicious about this turn of events? If it is true, how on earth can GM not be have enough stock on hand to instantly repair these engines? I have always owned GM vehicles, but after losing two turbos and one injector within the past year, to say nothing of a possible 3 week down time, my patience with GM is wearing extremely thin.