different warning lights come onfor a day or two and go off . the head lights on 2007 Chevrolet Suburban 1500

stayed on after turning off tne key . started it again and then they went off . tried to start it one morning and it was totally dead . Electrial system checked out good . headlights started blinking off and on and then stayed off .high beams work ok . what is going on ????

Asked by for the 2007 Chevrolet Suburban 1500
you may have a sticking headlight relay. repl that 1st if it doesn't work seek diag