[ovrtaxt]

Even if you don't pay, the unit is still active. It can always be used for emergency, and they can still track your location. It's ALWAYS on. (unless you rip it out of your trunk...)

If they can unlock or lock your doors remotely, I'll bet they can also shut your engine off, or manipulate anything else controlled by the car's computer.

[stuartcr]

Does it come free with the vehicle?

[wjcsux]

If they can unlock or lock your doors remotely, I'll bet they can also shut your engine off, or manipulate anything else controlled by the car's computer.
My point exactly. I much prefer to take the well being of my family and myself into my own hands. I don't need or want OnStar. Proper planning in advance to deal with any emergency is far superior to any high-tech gadget you can purchase.