1990 ELECTRONIC FUEL INJECTION EFI A 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 N0 17088062 1 B 4 3Z 1 17089062 1 B 5 0E 2 GROUP DESCRIPTION OTY 1 2 3 4 5 3 725 THROTTLE BODY INJECTION PRODUCTION 1 17088062 17089062 3 724 GASKET KIT 1 17111156 17111764 3 725 THROTTLE BODY INJECTION SERVIOE 1 17111640 17112066 3 729 BODY KIT THROTTLE 1 17111641 17112067 3 820 CONTROL KIT IDLE AIR VALVE 1 17111460 17111460 3 724 FASTENER ASSORT KIT 1 17111643 17111639 3 774 FILTER GASKET KIT FUEL METER 1 17079671 17079671 3 774 FUEL INJECTOR KIT 1 17111771 3 774 FUEL INJECTOR KIT ONE INJECTOR 1 17111468 3 774 FUEL INJECTOR KIT REMAN 1 17111694 17111866 3 724 FUEL INLET OUTLET KIT NUT WASHER 1 17111462 17111462 3 734 FUEL METER BODY KIT 1 17078262 17078262 3 734 FUEL METER KIT TW0 INJECTORS PRESSURE REG INCL 1 17111466 17111772 3 734 FUEL PRESS REG COVER KIT 1 17111875 17111875 3 440 SENSOR KIT THROTTLE POSITION 1 17111471 17111787 ADDITIONAL ATTACHING PARTS DIV GROUP MODEL USAGE NOUN NAME DESCRIPTION OTY PART 134 3 726 B 307Y GASKET CARB 01 22508038 1 3 726 B 4 3Z 5 0E GASKET T B I 01 10129563 1 34 3 750 B 307Y PIPE CHOKE CLEAN AIR 01 419302 1991 GENERAL MOTORS SERVICE PARTS OPERAT ONS CHEVROLET 17W 3 725 3 128 6 91