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Bear in mind too, that if you use the battery disconnecting method, you might lock up your radio. If you don't have it's security code, it can be a pain to get it working again.

To reset the check Engine light, Take off the battery connections overnight. Connect them in the morning and the light should be reset. This was answered on another question. Also ensure that the gas cap is on tight, That can also cause the "check engine light to come on, You should hear 5-6 clicks when you tighten the gas cap. .

Recently had the same problem, thanks to my wife. Took it to CTC and was told to check the gas cap and tighten it, then run the car for a few days. This was enough to finally have it go out...took about a day and a half to rebuild pressure.

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โˆ™ 2015-07-16 19:28:06
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Q: How do you reset the check engine light in a 1997 Pontiac Sunfire 2 2L caused by loose gas cap?
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