1986 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 17086056 12 B G 4 3Z 1 GROUP DESCRIPTION QTY 1 2 3 4 5 3 725 THROTTLE BODY INJECTION PRODUCTION 1 17086056 3 724 GASKET KIT 1 17111156 3 725 THROTTLE BODY INJECTION SERVICE 1 17111465 3 729 BODY KIT THROTTLE 1 17111469 3 820 CONTROL KIT IDLE AIR VALVE 1 17111460 3 724 FASTENER ASSORT KIT 1 17111643 3 774 FILTER GASKET KIT FUEL METER 1 17079671 3 774 FUEL INJECTOR KIT ONE INJECTOR 1 17111468 3 774 FUEL INJECTOR KIT REMAN 1 17111694 A 3 724 FUEL INLET OUTLET KIT NUT WASHER 1 17111462 3 734 FUEL METER BODY KIT 1 17078262 3 734 FUEL METER KIT TWO INJECTORS PRESSURE REG INCL 1 17111466 3 734 FUEL PRESS REG COVER KIT 1 17111875 3 440 SENSOR KIT THROTTLE POSITION 1 17111471 ADDITIONAL ATTACHING PARTS DIV GROUP MODEL USAGE NOUN NAME DESCRIPTION QTY PART 12 3 726 B 307Y GASKET CARB 01 22508038 1 3 726 B G 4 3Z GASKET TBI 01 14091605 1 7 3 726 G 231A EXPORT CANADA HEATER CARB AIR TO INT MANIF 01 25526373 12 3 726 B G 305H INSULATOR CARB HTR 01 10069984 1 3 726 G 305G INSULATOR CARB HTR 01 10069984 12 3 726 T INSULATOR EFE HEATER 01 14032308 12 3 750 B 307Y PIPE CHOKE CLEAN AIR O1 419302 1 3 750 B 305H RELAY CHOKE HTR CONT 01 14089568 1 3 750 B 305H 307Y SWITCH CHOKE HTR O1 3815936 1 5 3 750 G 305G H SWITCH CHOKE HTR 1 800 01 10002798 i 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17W 3 725 3 124 6 91