1990 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 CORRESPONDING COLUMN NUMBER WITH SAME COLUMN NUMBER ON CHARTS VIN PRODUCTION DIV CODE USAGE COL NO 17088083 1234 A 2 5R 1 GROUP DESCRIPTION QTY 1 2 3 4 5 3 725 THROTTLE BODY INJECTION PRODUCTION 1 17088083 3 724 GASKET KIT 1 17076157 3 725 THROTTLE BODY INJECTION SERVICE 1 17112176 3 729 BODY KIT THROTTLE 1 17112170 3 734 COVER KIT FOUR VACUUM PORT 1 17112086 3 724 FASTENER ASSORT KIT 1 17111819 3 774 FUEL INJECTOR KIT 1 17112123 3 734 FUEL METER BODY KIT 1 17112082 3 724 NUT KIT FUEL INLET OUTLET 1 17111818 3 764 SENSOR KIT THROTTLE POSITION 1 17111822 3 820 VALVE KIT IDLE AIR CONTROL 1 17111826 ADDITIONAL ATTACHING PARTS DIV GROUP MODEL USAGE NOUN NAME DESCRIPTION QTY PART 1234 3 726 A 2 5R GASKET T B I O1 10066687 1991 GENERAL MOTORS SERVICE PARTS OPERATlONS CHEVROLET 17A 3 725 2 68 5 91