FlamingGoatBalls Posted June 25, 2004 Report Share Posted June 25, 2004 My fathers 97 DeVille is showing a service engine soon light but there are no current codes? Whats going on? Its running fine but the light wont go out. Link to comment Share on other sites More sharing options...
Ben Posted June 25, 2004 Report Share Posted June 25, 2004 Try unhooking the battery for a little bit, then see if it resets. Post results. I have heard of this before, but don't remember exactly what it may be if that does not take care of it. Link to comment Share on other sites More sharing options...
SteveJ Posted June 26, 2004 Report Share Posted June 26, 2004 Well any history codes? They would also have set the SES light when they were current codes. As long as you are in there looking at codes might as well just use the clear codes functions under PCM to see if the codes come back. You can even clear codes while driving. Link to comment Share on other sites More sharing options...
FlamingGoatBalls Posted June 30, 2004 Author Report Share Posted June 30, 2004 PO174 finally showed up. case closed Link to comment Share on other sites More sharing options...
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