I also have a 2007 Chevy Avalanche Z71 and am having the issues with stabilitrak just turning itself off while I am driving which lowers my speed on my truck and I have to pull over and turn the truck off and then wait a few minutes , turn the truck back over and sometimes it will do it again and sometimes it won't. I am also having the check engine light on and will not let me use my remote start. It usually only does this when its cold. Not really liking this and want to know what I need to do to get this fixed.