I TM00 005 A RPO DEFINITIONS LB4 ENG NE 4 3L 4 3Z V6 LU2 ENGINE 4 3B 4 3B V6 HI OUTPUT L35 ENGINE 4 3L 4 3W CENTRAL PORT INJECT ON V6 9O DEG MDS TRANSM SS ON AUTOMATIC 4 SPEED THM7OOR4 4L60 L M3O TRANSMISSION AUTOMAT C 4 SPEED 4L6OE ELECTRON C NM8 EMISSION SYSTEM LEADED FUEL EXPORT DOMESTIC MILITARY VO8 COOLING SYSTEM HEAVY DUTY 1992 GENERAL MOTORS SERVICE PARTS OPERAT ONS L GHT TRUCK 53M L L t I 8 92 0 29 0 000gGROUP