Not that I want to have this whole injector conversation again, but I thought I had a few more going out in the passenger bank, since I replaced the drivers 4 in november of 2009. After hooking the laptop up and checking the balance rates, I have two bad injectors in the #2 and #4 cylinders. Which if my memory serves me correctly 2,4,6,8 are the drivers side and 1,3,5,7 are the passenger bank. All this to say that two of the brand new injectors I put in that I got from gmpartsdirect.com are already bad. I am not going to say that I am not to blame, but i took my time and did a good job so this deal is rather frustrating. On top of the fact that they are only about 5-6 months past warranty.