2000 zr2 Had serious short in main harness vehicle tried to start itself. Since then harness has been repaired everything works inside and out but dome light and door buzzer. Now it just cranks over unless you put gas in throttle body then it will run till gas is gone. Gas pump powers up when key is turned on and fuel sprays at throttle body when checked. Has anyone had this problem. NEED HELP AT WITTS END!!!!