Most parts places can get them along with any GM dealer. You do not need them, as all they are for is to lock the connector in place. Like I have said, I have lost many of them and not had a issue with the injector connector coming loose. I am a ASE Master Tech and deal with them all the time and know they are just a overkill for them, as most all of the locks the manufactors put on wiring connectors.Let me re-ask the question. does anyone know where I can purchase these clips?