Q: What does the "service vehicle" warning light mean and what do I do about it? on 2004 Saturn Ion

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
The light has just started coming on today. It stays on.

If I need a iagnostic code how do I find it?

Also, It has started vibrating when I apply my brakes. What is causing that?
(1) Answer
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