1990 ENGINE IDENTIFICATION ASSEMBLY CODES 5 7 350 L05 I 6 2 379 LH6 6 2 379 LL4 VIN K lIN O VIN J J UPD UPF UPH UPJ I JKV JKX JJB JJE JJG JJM UPS UPT U7L U7M JJN JJS JJV JJV U7U UTW U7X U7V JLA 7 4 454 L19 VIN N FSH FSJ FSK FSL FSH FSP 1991 ENGINE IDENTIFICATION ASSEMBLY CODES 5 7 350 L05 6 2 379 LH6 6 2 379 LL4 VIN K VIH C VIH J 4 FKL FJM FJS UZN DJB DJG DKV DKK DJB DJE DJG DJM UZJ UZM USF UBL DJH DJS DJV DJV UBJ UBH DLA 7 4 454 L19 VIN N I PSH PSJ PSK PSL PSN PSP 1990 GENERAL MOTORS SERVICE PARTS 0PERATIONS LT TRUCK 5ZR 0 000 0 4 REV 9 90