TG06 309 RPO DEFINITIONS JB1 BRAKE SYSTEM MANUAL DISC DRUM JB3 BRAKE SYSTEM VACUUM POWER DISC DRUM I JB5 BRAKE SYSTEM VACUUM POWER DISC BRUM JB7 BRAKE SYSTEM VACUUM POWER DISC DRUM JB8 BRAKE SYSTEM HYDRAULIC POWER DISC DRUM JD5 BRAKE SYSTEM HYDRAUL C POWER DISC DRUM JD7 BRAKE SYSTEM HYDRAUL C POWER D SC DRUM LB4 ENGINE 4 3L 4 3Z V6 LH6 ENGINE 6 2L 6 2C D ESEL V8 LL4 ENGINE 6 2L 6 2J DIESEL V8 LO3 ENGINE 5 0L 5 0E V8 T B LO5 ENG NE 5 7L 5 7K V8 DIGITAL FUEL INJECTION I L I9 ENGINE 7 4L 7 4N V8 T B I L57 ENGINE DIESEL 8 CYL 6 5L HO RO5 WHEELS DUAL REAR 7 Z49 MANDATORY CANADIAN BASE EQUIPMENT MODIF CATION1S CANADIAN 7B4 SPECIAL SUSPENSION SYSTEM RYDER 9L2 GVW RATING 6875 LBS BM6 SUSPENSION SYSTEM STEERING MODIFICATION 1 1993 GENERAL MOTORS SERVICE PARTS OPERATIONS LIGHT TRUCK 53G 2 93 6 7 6 000 GROUP