Where is Throttle Position TP Sensor in a 2009? Trying to fix code P2135 p/n 94580175

Hi - Arrrrghhh. I have a new TP sensor (part # 94580175 from Chevy). But I can't locate a help or photo to show where it goes. I hope I am not over my head. I removed the air intake that goes from the air filter to the (?) throttle body and now I'm stumped. Can't find the existing TP sensor to swap out. Where is it? Thanks

In the 2005 on back of the throttle body assembly

The throttle position sensor is on the throttle body.