SERVICIE BOOSTERS BOOSTERS REPAIRED WITH INPUT PISTON KITS I A RPO DEFINITIONS JB1 BRAKE MANUAL DISC DRUM 4300 LBS 22 1991 GENERAL MOTORS SERVICE PARTS 0PERATIONS LT TRUCK
ITEMS 11 13 17 18 28 RPO DEFINITIONS I T I JB1 BRAKE MANUAL DISC DRUM GVW 4300 LBS I JB3 BRAKE VACUUM POWER D SC DRUM GVW 4600 LBS JB5 BRAKE VACUUM POWER DISC