fuel injection

OK, My 04 4.2L trailblazer has been stalling at Idle while stopped at a light Occasionally. I recently had it to the local GM Dealer and they recommended a fuel system cleaning, from the Fuel Rail, for which I have ordered parts for but haven’t come in yet. However the tech said that he had...

anyone have any recommendations for cleaning the fuel injection system? i see 3m kits, kits that attatch to the fuel rail and run off the can and of course the dump in the tank stuff. i want to "clean" it good...thanx :dielaugh: