Where is the throttle position sensor for a 2000 Oldsmobile Intrigue?

I need to replace the throttle position sensor on my 2000 Oldsmobile Intrigue. I don't know exactly where it is located and am looking to replace it myself to save some money (broke college student). I tried search on google but couldn't find an answer to my question.|||Eng size would be helpful. If you remove the plastic top cover, look at the 6" diam black accordion hose on the drivers side of the eng. This is the throttle body. See the throttle assm? the TPS is located on the back side of the throttle body.