1988 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 N0 17088062 1 B 4 3Z 1 17087163 1 G 4 3Z 2 GROUP DESCRIPTION OTY 1 2 3 4 5 3 725 THROTTLE BODY INJECTION PRODUCTION 1 17088062 17087163 3 724 GASKET KIT 1 17111156 17111156 3 725 THROTTLE BODY INJECTION SERVICE 1 17111640 17111758 3 729 BODY KIT THROTTLE 1 17111641 17111760 3 820 CONTROL KIT IDLE AIR VALVE 1 17111460 17111460 3 724 FASTENER ASSORT KIT 1 17111643 17111643 3 774 FILTER GASKET KIT FUEL METER 1 17079671 17079671 3 774 FUEL INJECTOR KIT 0NE INJECTOR 1 17111468 17111468 3 774 FUEL INJECTOR KIT REMAN 1 17111694 17111694 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 TWO INJECTORS PRESSURE REG INCL 1 17111466 17111466 3 734 FUEL PRESS REG COVER KIT 1 17111875 17111875 3 440 SENSOR KIT THROTTLE POSITION 1 17111471 17111471 ADDITIONAL ATTACHING PARTS DIV GROUP MODEL USAGE NOUN NAME DESCRIPTION QTY PART 12 3 726 B 307Y GASKET CAR8 O1 22508038 1 3 726 B 4 3Z GASKET T B I 01 10129563 1 3 726 G 4 3Z GASKET TBI O1 14091605 1 3 726 B 305H INSULATOR CARB HTR 01 10069984 1 3 726 G 305G H INSULATOR CARB HTR 01 10069984 1234 3 750 B 307Y PIPE CHOKE CLEAN AIR 01 419302 1 3 750 B 305H RELAY CHOKE HTR CONT 01 14089568 1 3 750 B 305 SWITCH CHOKE HTR 01 3815936 1234 3 750 B 307Y SWITCH CHOKE HTR 01 3815936 1991 GENERAL MOTORS SERVICE PARTS OPERAT ONS CHEVROLET 17W 3 725 3 126 6 91