SUMMARY OF INFORMATION FROM MANUFACTURER: GENERAL MOTORS HAS SUBMITED ONE FIELD REPORT PERTAINING TO A CUSTOMER OWNED VEHICLE WITH PROBLEM.ANALYSIS: INSPECTION BY ODI ENGINEER REVEALED A MISSING NUT AND COTTER PIN WHICH HOLDSTHE TIE ROD END TO THE STEERING KNUCKLE. THE HEX NUT APPARENTLY HAD NEVER BEEN INSTALLED. OWNER HAD DRIVEN VEHICLE ONE DAY (LESS THAN 50 MILES) SINCE TAKING DELIVERY. G.M.'S ONE FIELD REPORT STATED THAT THE TIE ROD CAME APART DURING TEST DRIVE AND THE TIE ROD NUT WAS ALSO MISSING. IT WOULD APPEAR THESE ARE TWO ISOLATED INCIDENTS.PROPOSED ACTION: CLOSE THISPRELIMINARY EVALUATION.===