Where are the ground connections that I have to worry about? Ever since I did the 6.0 swap I've had p2681 and now I've been getting a code for low voltage on my knock sensors.

The truck runs normal when the codes are off/cleared but when they come on I go rich. Its driving me nuts!! I cleaned the block connection for the ground wire coming from the battery, and the 2 on the backside which one is in the trans harness and the other is in the loom for the passenger side injectors.

any suggestions on what could cause this problem?

another symptom that leads me to a ground issue, my voltage drains down drastically on certain things. just putting up the windows or running the defroster. It'll spike and then come back up.

I don't recall nor have I seen any pinched wires

Could bad knock sensor's cause this?

How do I remove a knock sensor that wont come out? I tried replacing the back one, but when I broke it loose it just spins but doesn't unscrew. I don't know what they are called but I think there is something like this pressed in the block which the knock sensors screw into and its just spinning but doesn't come out



that's the knock sensor location on my 4.8