2000 Chevrolet Silverado?

2000 Chevy ext cab 4.8L v8I got the diagnostic tester thing and it gave me the code and the def. was Exhaust Gas Recirculation control ciruit range/ Performance. Does any one know what this means and how i fix it? please and thanks|||Your Exhaust Gas Recirculation valve is sticking. It needs to be replaced. They are pretty expensive. It is located on the right side (passenger side) of the engine toward the front. It is cylindrical in shape and has a connector at the top. Very easy to replace.|||it is a egr valve and you need a new one it is close to or in line of your exhaust held by 2 or3 bolts it not to hard to do