Resurrecting this.... My cruise light flashes (with no CEL) if I go up steep inclines, or full throttle the car a lot. I have an exhaust leak somewhere and it smells awful when the cruise light starts blinking. I really wish the CEL would trip, but it never does.
Also, my cruise decides to shut off intermittently on it's own. I can't even use it anymore, it turns off randomly. I'm thinking it might be related to emissions somehow?