I assumed that maybe it was in LIMP mode or the computer was messing up so restarting it might resolve the problem. I had done this in the past when the vehicle would not shift out of first and it always fixed it for a few days/weeks until it happened again. That is a separate issue from the one I mentioned above.
I received an update regarding the current repairs, and GM is putting a new head in cylinder 4. We are also having it serviced for recall #14410 (PCV valve) while the vehicle is at the dealership. Hopefully I can get out of paying for the spark plug service, which were obviously da