Where are the impact sensors on a 2005 Buick Terraza or Chevy Uplander? I need to replace the passenger one but I can't find it. I searched on the web and YouTube for pics, diagrams, and videos and can't find any.

Update: The Advance Auto Parts website mentions them maybe being mounted to the radiator. I'll get it on a jack tomorrow and see if I can find them there.

 

I found them. I was looking in the wrong place. All the videos show people crawling under the car to replace them. The Terraza has them up in the front behind the grill. Here are a couple of pics.
The impact sensor is labeled: 15222307 AD2307XA2LJW