Well, it looks like I've got a slight air gap in the upper part of the throttle body blade. I was finally able to get the stock connector from the vortec motor to go into the 03 LQ4 IAC I had, but it made no difference. Then I put a piece of large rubber 0-ring at the top of the completely closed throttle body and the truck slowed down almost dieing and then started using the IAC. Since Ballistic Speed is out of business, what throttle body would you all recommend? Is it possible to get a replacement throttle blade? Are all 92mm throttle body blades the same?