Question about 2003 Buick Century

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Buick Century 2003 service engine soon light

I have a buick century 2003. When it came time for my oil change 3 months ago my service engine soon light came on. When the car was serviced the light went off. When I had my oil changed this time my light stayed on. Buick man told me they did not reset the service engine light, Dealer wants to charge me $85.00 to diagnose the problem. Where is the reset button located.

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  • philpil Jul 13, 2008

    change oil came on,then service engine. changed gas cap, service engine still on

  • grbradley Jan 20, 2009

    My service engin light is on and i just had my oil changed. How do i make it turn off. I don't want to pay $85 for something i can do my self.

  • Anonymous Mar 14, 2014

    Warning light "change engine oil" stays on when I have already changed oil.

  • Anonymous Mar 17, 2014

    1999 buick century oil warning light flashes on when i stop

  • Anonymous Mar 17, 2014

    1999 buick century oil warning light flashes on when I stop. The engine taps when first start.

  • Anonymous Mar 20, 2014

    3.1 liter buick century

  • Anonymous Mar 24, 2014

    service engine soon light blinking

  • Anonymous Mar 26, 2014

    lights stay on dash not working , how do i reset this

  • Anonymous Mar 29, 2014

    looking for a free service manual

  • Anonymous Mar 29, 2014

    looking for free service manual

  • Anonymous Mar 30, 2014

    2005 buick lesabre. service engine soon light on. had the code read with a scanner and the evap vent door id not working properly. it sticks. what do i need to do to correct the problem?

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6 Answers

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My service engine light was caused by a cloged passage from my EGR valve. Mine is a 3.1 with fuel injection 2003. All I needed to do was pull the two bolts over the intake plenum and remove the vacuum connection to the PCV valve. Then clean out the EGR port just below the vacuum connection in the throttle port. I would remove the rubber intake to vacuum it out. The carbon was like rock in there. Service engine light cleared on its own.
Dave

Posted on Mar 10, 2010

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The service engine soon ligth is not the same as the change oil light. The change oil soon light you only need to turn the key to the on position and pump the gas to the floor 3 times with in 5 seconf\ds and wait. You will see the change oil light blink 3-4 times and then it is reset. The sevice engine sooncan be anything from a loose gas cap to a bad sensor such as a MAF. I just had to change that as the car was not getting poower on accerleration on my own car. The best thing to do is get someone witha scan tool and read the error code for the light and take it from there. You can buy code scanners that are OBDII compliant for arounf $50.00 and they are simple to use. If you can not do that then get a gargae to read the code for you and if you tip the mechanic a bit he will do it for free, if you know what I mean. to read the code takes less then 5 minutes.

Posted on Jul 08, 2009

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Most auto parts stores will clear the codes for free

Posted on Mar 29, 2013

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Engine soon got nothing to do with oil change engine soon is on because you have a bad sensor to reset the light you disconnect the battery for 1 minute if it not a hard problem the check engine soon will be off but it wont fix it good luck pierre

Posted on Jun 29, 2008

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How do you change motor mounts on a 2003 Buick Century. And many are there I know about the to on top how many are there on the bottom of the motor and transmission.

Posted on Jul 12, 2013

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02 Sensor will fix problem

Posted on Feb 02, 2011

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miket756
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SOURCE: 94 BUICK CENTURY, GET ENGINE SERVICED SOON. RUNS

it wont for long??? it screeming out for a service to be done
how long do you wont to keep this car? get a service done

Posted on Oct 27, 2009

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How to Reset the GM Oil Life System
After changing the engine oil, the system must be reset.
1. With the engine off, turn the ignition key to RUN.
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On 2003 Buick Century had the oil changed but the change oil light comes on when I first start the car and stays on for about 3-5 min. Is it supposed to do that or does it need to be reset?


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Dec 03, 2009 | 2003 Buick Century

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Nov 23, 2009 | 1994 Buick Century

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You will need to have a reputable mechanic do a diagnostic check on the car to determine the problem. This should pull up a code number in your car's computer and help point the mechanic and you in the direction of the malfunctioning part/s.

Just today, I had a diagnostic check done on mine for nearly $45.00. The mechanic was able to figure out the reason why my service engine light was staying on. I knew my car's radiator fans failed to run when car's engine was hot except when the A/C was running. I had changed out the sensors and was never able to get the light to go out or get the fans working. They were able to determine that the 25 amp fuse for the fans located under the hood was blown. After replacing it, the fans worked as they should, my car runs cooler and the engine service engine light is now out. Of course there are many possible reasons why the service engine light may come on including problems with the car's emissions. A reputable mechanic can solve your problem.

Apr 07, 2009 | 2003 Buick Century

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Probably the dealer will reset the system it for free.

Mar 25, 2009 | 2003 Buick Century

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Turn your key to the on position wait until all of your indicater lamps do their thing . Then pump the gas pedal 3 times in rapid motion in less than 5 seconds. Wait until you see the change oil light start flashing. If this does not happen then turn the key off turn it on again and repeat the procedure.

Jan 30, 2009 | 2005 Buick Century

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