I GM03 145 1985 1988 G THROTTLE BODY TBI MODEL 220 LB4 4 3Z 1985 1990 B THROTTLE BODY TBI MODEL 220 LB4 4 3Z 1989 1990 B THROTTLE BODY TBI MODEL 220 LO3 5 0E NOTE SEE CHART IN GROUP 3 000 FOR USAGE 1 N S SCREW ASM FUEL METER COVER ATTACHING ILONG 3 9 2 N S SCREW ASM FUEL METER COVER ATTACHING lSHORT 3 9 3 N S COVER ASM FUEL METER 3 12 4 N S GASKET FUEL ME TER COVER 2 3 4 10 12 5 N S GASKET FUEL ME TER OUTLET 2 3 10 12 6 N S SEAL PRESSURE FIEGULATOR 3 4 10 12 I 7 N S REGULATOR PRESSURE 3 12 10 3 774 INJECTOR FUEL 3 4 I 11 N S FILTER FUEL INJECTOR INLET 3 4 8 10 12 N S O RING FUEL INJECTOR LOWER 3 4 10 13 N S O RING FUEL INJECTOR UPPER 3 4 10 14 N S WASHER FUEL IN JECTOR 3 4 10 20 N S SCREW ASM FUEL METER BODY T B ATTACH ING 9 21 N S FUEL METER BODY ASSEMBLY 3 11 22 N S GASKET THROTTL E BODY TO FUEL METER BODY 2 3 23 3 403 GASKET AIR CLEANER 2 30 3 163 O RING FUEL RETIJRN LINE 31 N S NUT FUEL OUTLET 8 L 37 3 163 SEAL FUEL FEED PIPE O RING 38 N S NUT FUEL INLET 8 40 N S GASKET FUEL OUTLET NUT 3 4 8 41 N S GASKET FUEL INLET NUT 8 I 52 N S SCREW ASM THROTTLE POSITION SENSOR AT ACH NG 9 55 N S RETAINER SENSOR ADJUSTABLE 6 I 58 N S SENSOR THROTTLE POSITION NON ADJUSTABLE 6 N S SENSOR THROTTLE POSITION ADJUSTABLE i5 60 N S PLUG IDLE STOP SCREW 5 V 81 N S SCREW ASM IDLE STOP 5 62 N S SPRING IDLE STOP SCREW 5 65 N S BODY ASM THROTTLE 1 5 70 N S GASKET FLANGE 2 f 75 N S VALVE ASM IDLE AIR CONTROL THREADED MOUNTED 7 N S VALVE ASM IDLE AIR CONTROL FLANGE MOUNTED 7 76 N S GASKET IDLE AIR CONTROL VALVE ASM 2 77 N S O RING IDLE AIR CONTROL VALVE 7 78 N S SCREW ASM IDLEE AIR CONTROL VALVE ATTACHING 9 NOTE 1 GROUP 3 725 THROTTLE BODY INJECTION UNIT COMPLETE ASSEMBLY PLUS AIR CLEANER FLANGE GASKET NOTE 2 GROUP 3 724 GASKET KIT INCL ITEM 4 5 22 23 70 76 A NOTE 3 GROUP 3 734 FUEL METER KIT INCL ITEM 1 2 3 4 5 6 7 10 11 12 13 14 21 22 40 NOTE 4 GROUP 3 774 FUEL INJECTOR KIT INCL ITEM 4 5 6 10 11 12 13 I4 40 SERVICES ONE INJECTOR I NOTE 5 GROUP 3 729 BODY KIT THROTTLE INCL ITEM 65 A NOTE 6 GROUP 3 440 SENSOR KIT THROTTLE POSITION INCL ITEM 55 58 NOTE 7 GROUP 3 820 CONTROL KIT IDLE AIR VALVE INCLS 75 77 NOTE 8 GROUP 3 724 FUEL INLET OUTLET KIT INCL ITEM 11 31 38 40 41 NOTE 9 GROUP 3 724 FASTENER ASSORT KIT INCL ITEM 1 2 20 Ei0 51 52 78 NOTE 10 GROUP 3 774 FILTER GASKET KIT FUEL METER INCL ITEM 4 5 6 11 12 13 14 SERVICES ONE INJECTOR I NOTE 11 GROUP 3 734 FUEL METER BODY KIT INCL ITEM 21 I NOTE 12 GROUP 3 734 FUEL METER COVER KIT INCL ITEM 3 4 5 6 7 I t 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17W 6 91 3 63 W 3 000 GROUP