THIS SALE IS FOR ALL SIX OF THE CHEVY / GMC PICKUP TRUCK / VAN TBI THROTTLE BODY SENSORS THAT YOU SEE IN THE PICTURE. THEY INCLUDE THE EARLY MODEL 1987-90 THROTTLE POSITION SENSOR THE IDLE AIR CONTROL MOTOR THE MAP SENSOR THE ELECTRONIC SPARK CONTROL THE IGNITION MODULE AND EGR SWITCH. THESE SENSORS WILL WORK ON ALL THE GM TRUCKS AND VANS LISTED BELOW. I ALSO HAVE OTHER CHEVY TRUCK ECM COMPUTERS AND TBI FUEL INJECTORS FOR 2.8 3.1 4.3 5.0 AND 5.7 LITER ENGINES UP FOR SALE SO PLEASE VIEW MY OTHER ITEMS FOR MORE CHEVROLET C/K SILVERADO SUBURBAN K5 BLAZER GMC SIERRA FORD JEEP CHEROKEE WAGONEER TRUCK PARTS. THANKS!!!!