OK, so I answered my own question. It turns out that last year when I had my new computer tuned, the VATS was unchecked. I didn't know this, and when I read the PCM yesterday, the VATS constant was unchecked. We still have issues with the VATS, so it appears that even if the VATS constant is unchecked, there will still be issues with it.
It looks like we'll have to bypass the VATS module all together.