2007 Suburban (1500, 2WD) Driving from Houston to Dallas today, and got on the highway early morning. With the cruise control on, I flashed my high beams and it disengaged the cruise control. Could not re-engage for a period of time (seems to me the sun was now up, and the headlights were off). Returning to Houston in the afternoon - engaged the cruise - hit the window switch - cruise control disengaged. Has anyone experienced anything like this in their vehicle - thanks for the advice in advance.