Ok, here you go guys, what do you think now (I'm going to leave it here for now though this may not be the right section). On Sunday, since they said go ahead and drive and see what happens, I did. Out of the house over to Lowe's, about 10 miles, just fine. Come out of Lowe's, start, groan, there is the error again and a definite reduced engine power. Straight to the dealer, lucked out on traffic with the flashers on a couple of times though since it was Sunday of Labor Day weekend, closed. I parked it and cut it off with the error still showing. Today, it wont duplicate, but they read the code "P2135" ... throttle body, ugh. Dealer says GM won't let them do anything without returning it to stock ... okay, I guess I can see that, I have a Cold Air Inductions CAI and a Tampa Tuning ported throttle body, and one of those wedge spacers. Now my questions are: 1) do I do anything if it doesn't do it again, 2) for people who send their throttle bodies in as a core, they are scr3wed aren't they? I kept mine 3) do I try it one piece at a time? 4) these pieces are advertised as not causing codes, what gives?