The sensors will work with aftermarket wheels. If the sensor won't fit through the tire valve hole and install as originally designed, it can be epoxied and strapped in place around the inside of the wheel.
The sensors are specific to each corner of the vehicle. When switching rims, it is a good idea to place the same sensor at the same corner. However, this new system GM is using has a self-learning mode, that will allow it to learn the sensors location over a driving period. During that driving period you will receive some DIC messages. The self-learn method is what is used if you have to use a spare, since the spark also has a sensor.
The sensors can also be forced learned using a special low frequency tool. (The older version required either a magnet to open a reed switch or a low frequency tuner to allow the BCM to recognize each sensor.)
This is one system that is nice to have, in that if one of your tires starts to loose pressure, you will be warned (unless a complete tire failure when the tire is blown). It works great when you pick up a nail, and sometimes can help prevent you from having to change a tire at the side of the road.
Just a thought.
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Black Sheep Hummer Squadron
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