1991 ELECTRONIC FUEL INJECTION EFI THROTTLE BODY INJECTED FOLLOW PROCEDURE OUTLINED BELOW TO DETERMINE CARBURETOR AND OR PART NUMBER 1 DETERMINE VEHICLE MODEL CHECK VIN DIVISIONAL CODE 2 DETERMINE ENGINE AND CARBURETOR TYPE 3 PART NUMBER CAN BE DETERMINED BY CROSS REFERENCING 1 CORRESPONDING COLUMN NUMBER WITH SAME COLUMN NUMBER ON CHARTS VIN PRODUCTION DIV CODE USAGE COL NO 17089107 1 J 2 2G 1 GROUP DESCRIPTION OTY 1 2 3 4 5 3 725 THROTTLE BODY INJECTION PRODUCTION 1 17089107 3 724 GASKET KIT 1 17076152 3 725 THROTTLE BODY INJECTION SERVICE 1 17112358 3 729 BODY KIT THROTTLE 1 17111896 3 734 COVER KIT FOUR VACUUM PORT 1 17112199 3 724 FASTENER ASSORT KIT 1 17111819 3 774 FUEL INJECTOR KIT 1 17111986 3 734 FUEL METER BODY KIT 1 17111987 3 724 NUT KIT FUEL INLET OUTLET 1 17112601 3 764 SENSOR KIT THROTTLE POSITION 1 17111815 3 820 VALVE KIT IDLE AIR CONTROL 1 17111816 ADDITIONAL ATTACHING PARTS DIV GROUP MODEL USAGE NOUN NAME DESCRIPTION OTY PART 1 3 726 J 2 2G GASKET T B I O1 10045099 T 1993 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17J 3 725 3 56 4 93