Question about 2004 Oldsmobile Alero

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Service engine soon light 2004 Alero

Husband filled gas tank with car running. It's a 2004 Alero. Can I reset the light?

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  • fncycats Dec 16, 2008

    That is exactly the number they gave me.How do I reset it? Can I reset it?

  • fncycats Dec 22, 2008


  • Anonymous Mar 24, 2014

    mechanic has looked at my car several times and can't find a problem



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If it truly set code for "loose fuel cap" or po455 large leak, then tightening the cap and driving a couple days should reset on its own. if not then get it checked for free at autozone and report back with code # and can help from there. they'll ck for free but are not allowed to reset.

Posted on Dec 16, 2008

  • autodr
    autodr Dec 16, 2008

    it could take up to 40 "warm up cycles" (a cycle is when the system tests and passes its test) for the engine before it clears on its own. maybe a local shop in town will clear it out for a small fee


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You can disconnect the neg terminal on the battery for five minutes then reconnect it and it will clear the check engine light.

Posted on Jul 09, 2013

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I actually have a 2002 Oldsmobile Alero.
I had my car serviced and the technician forgot to reset the "Service Engine Soon" light. How can I do this for myself?
Thank you!

Posted on Sep 05, 2010

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1 Answer

My car was almost out of gas I made it to the pump put gas n and then it wouldn't start what can it be its a 2004 alero 2.2 motor help

Gm vehicles generally do not like to be run out of gas. The fuel in the tank helps keep the fuel pump cool. If it was running before you filled it than it is very likely that the pump has gone bad.

A couple of things you can do. Look for the fuel test port on the fuel rail. Remove the plastic cap and press in the schrader valve. there should be a spurt of fuel when it is depressed (use caution as not to get fuel in your eyes). If nothing comes out crank the engine over a couple of times and try again. If nothing still comes out we have confirmed it is a fuel issue.

You will need a helper for this next trick. Get a rubber mallet and smack the center of the fuel tank with the mallet while your helper tries to start the engine. If the engine starts replace the fuel pump.

I’m happy to assist further over the phone at

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