To those who have done it, what steps are involved in replacing the knock sensor with a new one?

 

Jack car up. Reach up from underneith on intake side above the thermostat right in middle of block. Unplug it. Unscrew it (it's threaded...can't recall size...might be 22mm). Screw in new one. Plug back in. Lower car.

 

Any pictures of what a new and broken knock sensor should look like? Mine pulls out very easily. The MIL came on for the second time, but shuts off a few days later.