I have a 2001 Intrique, I took it to the shop because I had a bad door window motor, and the Air conditioning was not working. A couple of day later, my air conditioning light started blinking, then would shut off. Then the idiot light started to come on, brake, low oil,etc… now the air stopped blowing cold, and when I have the cruise control engaged, and I turn on the turn signal or open the window the cruise goes off, these problems are mostly when the call is hot, hot from tempature out side, not engine tempature.
Have the alternator checked to make sure it is working to spec and especially make sure the AC ripple voltage is less than .1 volt. Try cleaning the battery to chassis ground connection to see if that will help with the CC issue.