1 f A 1 GM04 zsz l 040987 1 9 A 21 I 1 11 11 1 A AA A A AAQQ A 2 AA A RQ 1 E jg in 3 A 1 1 1 1 A T 1 AA 1 1 1 A 1 1 11IJ r 1 9 12 1 S af 1 16 1 i T 1 A 13 A 1 I 1 22 14 a R 1 KX 1 1 1 1 0 2a K 1 1 241 15 7 sa O 25 1 1 A 26 4 31 f 27 A A A X6 1 28 1 1 y 32 1 Q 1 1 1 1 4 3 3 I b A 1 1 I 3g V 1 1 10 O 1 1 I 1 1 1 DM7029E001 A YV I GM04 282 A 1987 1989 L BRAKE BOOSTER VACUUM DUAL DIAPHRAGMIIDELCOI l 1 NOTE SEE PARTS CATALOG FOR POWER BOOSTER CHART IN GROUPA4 9O1 1 4 659 R BOOT 1 2 1 1 1 1 1 V 1 2 N S SILENCER 1 2 3 1 1 1 1 1 3 N S VALVE1 VACUUM CHECK I 2 4 1 4 N S GROMMET1 1 2 4 1 1 1 A 1 7 N S SEAL FRT HOUSING 1 2 A 8 N S BEARING PRIMARY PISTON 1 2 1 1 9 N S HOUSING REAR 1 A 1 1 1 10 N S HOUSING FRT 1 1 11 11 11 N S SPRING RETURN 1 1 1 A 12 4 924 ROD PISTON GAGED 1 L 1 1 13 N S RETAINER REACTION 1 1 1 1 1 A 14 N S SILENCER POWEFI HEAD 1 2 1 1 15 N S RETAINER DIAPHRAGM 1 2 1 1 16 N S DIAPHRAGM PRIMARY j 1 2 1 1 1 17 N S PLATE PRIMARY SUPPORT 1 11 1 1 1 1 1 118 N S BEARING PlSTON SECD 1 2 19 N S DIVIDER HOUSING 1 1 11 1 1 1 1 1 1 1 1 1 1 1 1 1 20 N S DIAPHRAGM SECD 1 2 1 1 111 11 1 1 1 1 11 1 1 1 11 I 121 N S PLATE SUPPORT SECD 1 1 1 11 1 1 111 1 11111 1 11 122 N S DISC REACTION 1 2 5 1 1 11 11 1 1 1 1 1 1 23 N S PISTON REACTION 1 5 1 1 11 1 1 1 1 1 11 11 1 24 N S RETAINER BODY REACTION 1 3 5 1 1 1 11 1 1 25 N S BODY REACTION 1 5 1 1 11 1 1 1 11 1 1 1 26 N S SPRING AIR VALVE 1 3 1 1 1 A 1 1 11 1 1 1 11 1 27 N S BUMPER REACTION 1 2 3 1 11 1 11 1 1 1 11 11 11 1 1 28 N S RING RETAINER 1 2 3 1 1 1 1 1 1 1 1 1 1 111 1 1 1 29 N S FILTER 1 2 3 111 1 1 1 11 1 111 1 11 1 1 A 30 N S RETAINER 1 2 3 1 1 1 11 1 1 1 11 11 11 1 1 1 1992 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17L j 1 92 1 1 4 1 15 A 4 000 GROUP