why does my cadillac only turn on when service engine soon light is on..?
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1999 Cadillac Seville STS Question: service engine soon
Answer #1matte October 15, 2009, 13:55Master
I'm not sure I understand this. The service engine soon light is the check engine light. You can read more about it here: http://repairpal.com/check-engine-light.
It means that there is a problem with your car that could definitely be serious enough to affect starting.