I have a warning sign (Service vehicle soon) in lumina 2006. What is that mean? on 2006 Chevrolet Impala

The car shut off while i was driving and its not working now

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2 answers
If the car does not start , you can spend money on an inexpensive OBDII scan tool and take a chance on posting the codes , or put that money towards a tow to a shop that you trust and/or has good reputation. If you opt for the scan tool , will you be doing the work yourself and are you equipped to do it? The more we know the more we can help.
have codes read at auto zone for free and post so we can adv