Car runs fine. What should I look for?
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2004 Cadillac DeVille Question: Service engine soon light popped on this morning.
Answer #1bmdouble November 23, 2013, 11:18Master
You will need to hook up a scan tool and retrieve codes to see where you need to start your pinpoint testing. Although you can get this done for free at some auto part stores,do not let them sell you anything without getting expert advice on it first!!!