Engine size = 3.4 dash lights = Service Engine Soon codes = ? Work done prior = None tech = JK question = My Olds Service Engine Soon light came on 2 days ago. Everything seams fine. How do I code it and how do I reset the light? Thanks for your time.
JK: Hello and welcome. Anytime the check engine light is on, the computer is seeing a problem in one of the vehicles systems. A scanner is required to get the codes, to start diagnosis. Some of the large national parts store chains will do this for free. Once the code(s) are retrieved, diagnosis can begin.
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