[dug224]

Pulled the old knock sensors and wiring harness. The front knock sensor was in the worst shape. I got the intake and knock sensor surfaces all cleaned up and now waiting on parts. After seeing really poor reviews across the board on aftermarket knock sensors, I decided to spend the extra money and get genuine GM ACDelco parts. Based on what I have read and what DSRAVEN did, I will be creating a dam around the knock sensors. I plan on leaving out the factory foam pieces that are mounted at each end of the intake manifold because they are in pretty bad shape. They are said to be installed to keep debris from getting under the intake and also as sound abatement. Not sure which one or if both are correct. In any case, I will be leaving mine out.