Part identification

[charlief1]

If it's located at the back of the block I'd say you found the right one.

 

[b4black]

It's blue and the Casper's pigtail is blue.... I bet someone yank on it and the rest of the connector is still on the old knokc sensor.

Find the ESC module on the passneger side inner fender. See if the two blue wires have continuity.

ESC module and connector look like this:
http://oldschool.supracentral.com/repair/esc.jpg

 

[50psi]

, i'll check it out tonite, the guy that had the car before my was a complete idiot he prolly just pulled it out on accident. When i went and bought the car he was telling me how great a 350 would be in the car, and was saying that it was the worst decision buick ever made by putting a turbo v6 in a car...