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My 2004 Grand Cerokee low coolant warning came on Sunday so I filled it. Tuesday afternoon the check engine light came on, any ideas?

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Check engine light on , did you have it check for DTC'S - diagnostic trouble codes ? Check Engine Light on

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Check engine light came on Tuesday afternoon, after I filled the gas tank on Monday afternoon. If the check engine light came on because of the gas cap not being on tight enough, do I just tighten the gas...

Check engine light might have came on because of loose gas tank cap, but it's a good idea to read the code and check if it's not something else, you can take your car to an Auto Zone and they read the code for free and tell you the cause also. But if you want to reset the check engine light, only way is to disconnect the battery terminals and let it set overnight, check engine light will be reset. Hope it helps and let me know if you need more advice. Please don't forget to rate the answer it helps with my ratings, thanks!

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