v K TP04 3115 NOTE 2 SEE POWER BRAKE BOOSTER ILLUSTRATION IN GROUP 4 000 FOR DETAILS RPO DEFINITIONS JB8 BRAKE SYSTEM HYDRAULIC POWER DISC DRUM JF9 BRAKE SYSTEM HYDRAULIC POWER 4 WHEEL DISC I L19 ENGINE 7 4L 7 4N V8 T B I 1992 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 53P 4 000 GROUP 4 68 I9 92