my 99 didn't have a tire pressure monitoring system, and my 2001 doesn't have one either, I would be very surprised if your 97 had a tpms. there is a detailed write up on here someplace that lists the steps to take to fix your abs:

http://www.grandprixforums.net/threa...S-Off-Solution

even if your abs module was bad aka ebcm you can send it to module master in Moscow, Idaho and they will rebuild it for 150 if they see anything wrong. if you dont want to get it rebuilt you can look around for a used unit, make sure it is compatible and use that. they often sell for around 50, sometimes less.

your best bet is to use a multimeter and check the wires, my abs has been acting up lately, not the first time, and I am about 95% sure I am having wire issues. if you can get a code reader then you can see if any of the other components like speed sensor in the wheel hub, or the wheel hub has gone bad. the ebcm can also go bad.