GM: FUEL GAUGE INOPERATIVE/FLUCTUATES HARD/NO START SES/CHECK ENGINE LIGHT ON. CONDITIONS MAY BE INTERMITTENT. UPON INVESTIGATION, THE TECHNICIAN MAY FIND VARIOUS DTCS SET. THIS CONDITION MAY BE DUE TO THE HARNESS RETAINER SLIPPING ON THE TUBING PUTTING PRESSURE ON THE HARNESS CAUSING CONNECTOR X305 TO BE PARTIALLY SEPARATED OR NOT FULLY SEATED. *JS
