Question about 2000 GMC Safari

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Service Engine Soon Light - What causes this light to come on? I already checked the gas cap and it did not make any difference. The van had a tune up about 2 months ago (changed plugs, air filter,fuel filter and rotor cap.

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THERE IS A SENSOR OUT OF RANGE THAT IS WHAT MAKES THE LIGHT COME ON YOU NEED TO PUT IT ON A SCANNER AND THAT WILL GIVE YOU A CODE FOR WHAT THE TROUBLE IS

Posted on Oct 14, 2010

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Posted on Jan 02, 2017

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Service light on


Is this the amber/yellow Service engine soon light? If so here is what it means.

The information below was complied by me, it explains what causes the check engine light to come on and the process of finding the cause.
When the Check Engine light (or Service Engine Soon or small picture of an engine) is turned on, the systems computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine and/or the emission system. When this happens you will seldom feel the car engine run any different. There are about 200 possible system faults (the gas cap is just one of them) that turn the Check Engine light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen/Oriley and Autozone parts stores (USA only) do this testing for free.

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1 Answer

My van engin light stays on


The information below was complied by me, it explains what causes the check engine light to come on and the process of finding the cause.

When the Check Engine light (or Service Engine Soon) is turned on, the systems computer control unit (called the PCM) has sensed a fault in the electronic controls of the engine and/or the emission system. When this happens you will seldom feel the car engine run any different. There are about 200 possible system faults (the gas cap is just one of them) that turn the Check Engine light on, to know what has developed a problem you must have the system tested, this is called an OBD2 fault code test, Kragen/Oriley and Autozone parts stores (USA only) do this testing for free.

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Engine service soon displayed on dashboard allways. vehicle chevy van g20 starcraft 1993.


Why not just have the codes read and reset at a place like Autozone, that does it for free?
It could just be odometer based, telling you a maintenance is due based on miles.

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The service engine light is the check engine light. Different name for the same thing.

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2004 Ford Explorer--65k miles..service engine soon light on...not gas cap, had fuel system chemically cleaned by Precision tune...


get the code to determine what system is at fault. If you already did and it directed you to the gas cap then thats about all you can do other than look at the engine and air box for any vacuum hoses that may of been left off.

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Check Engine Soon


and........what? What do you want to know? Bring it to a mechanic or Ford dealer service dept to troubleshoot what caused the indicator to light. Another possible is, on the last time you filled up with gas, did you make sure to put the gas cap on securely; this can cause a "Check Engine" light.

Oct 20, 2009 | 1999 Ford F150 Regular Cab

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Service engine soon light came on after full tune-up


Make sure the gas cap is on tightly. A loose or faulty gas cap can cause an intermittent check engine light. Hope this helped and best wishes.

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2004 Saturn VUE (M/T) STEADY service engine soon light


SOME TIME PCM GET A VOLTAGE SPIKE.OR ELECTRICAL INTERFERENCE WILL CAUSE SERVICE LIGHT TO COME ON WITH NO CODES.IF IT KEEP HAPPENING TAKE IT TO DEALERSHIP TO CHECK IT OUT.

Aug 12, 2009 | 2004 Saturn VUE

1 Answer

2001venture van service engine soon light stays on


most any sensor going bad can cause the check engine light to come on,try disconnecting the posative battery cable for 15 seconds ,then put it back on,will reset the codes, or take it to auto zone,they will test your computer for codes at no charge to you.i had a venture van my was ox. sensor. thanks robert b.

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Service engine soon light


How do you turn off or reset the "Service Engine Soon " light off without taking my Infinity I35 to dealer. Trying to avoid $200.00 dealer charge!

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