I 199O ENGINE IDENTIFICATION ASSEMBLY CODES A I 2 ig 51 LNO i3 62 LU2 j 62 LB4 M BUM UUW UTY UUA UUJ UWA I 1991 ENGINE IDENTIFICATION I ASSEMBLY CODES I A 4 3 262 LU2 4 3 262 LB4 I VIN B V VIN Z FLR I V FLB FLD FKY FKZ i 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS LTTRUCK 52M 181 A 0 3 l 0 000