I did some longer drives over the weekend. After the guy swapped out the cruise control, it disengages by itself much less. I am thinking it doesn't have anything to do with the
scangauge since I had it disengage once without the
scangauge hooked up. But during 70 miles on the thru-way yesterday, I had it disengage just once. Still not sure what is causing it. I am doing a bunch of freeway driving next weekend, and will see how it does.