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'98 DeVille Service Engine Soon


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The Service Engine Soon light has come on twice in the last 2500 miles in my '98 DeVille. It stays on through about 10 ignitions and then goes off.

Coincidentally I got a card from the dealer suggesting 72K mile service. I am at 73K. Does this come on as a reminder of the suggested service interval connected to the mileage? The codes do not indicate anything active/current.

Do I have to take it to the dealer? I am not confident of them.

I plan on only keeping the car another 3 months. Any advice?



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It the "Service Engine Soon" light is on then there is a code stored that will tell you what the fault is. It could be as simple as a slow responding O2 sensor that can be ignored. It is not a service reminder.

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