So I went and had two snow tires put on at my local goodyear, and the numskull managed to break my TPMS sensor. They're going to fix it once they get the part, thankfully. So driving home, I expected a pressure warning... turns out, I got no warning from the computer. Why might this be? I have an 07 GT that I picked up in May 07... not sure on the build date.

 

My warning light came on yesterday when I drove my car in the rain for the first time