1989 GMC C1500 FLOODING WHEN IDLE

Engine Mechanical problem
1989 GMC C1500 V8 Two Wheel Drive Automatic

I have a 1989 gmc c 1500 piclup. It runs good, but when it is ideling it floods. Sometimes dies. We have done everything we can think of to fix the problem. New sensors, carb kit. Filters etc. Any advice you could give would be greatly appericiated.