L N U TT06 089 ARPO DEFINITIONS I K I E I A I I I I GU4 AXLE REAR 3 08 RATIO I I I I I GU6 AXLE REAR 3 42 RATIO I A LR4 ENGINE GAS 6 CYL 4 3L TBI V6 90 DEG I 1900 GENERAL MOTCIR3 SERVICE PARTS 0PERATIONS LIGHT TRUCK 528 6 000 GROUP I I A 8 6 I I 1 0 90