Question about 2003 Chevrolet S-10

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Engine reset light on 2003 gmc envoy

How do i reset the service engine soon light?

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  • Anonymous Mar 24, 2014

    how can i clear the 4x4 service light off

  • Anonymous Mar 26, 2014

    what can i do

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The service engine light you refer to is telling you you have a problem with the computerrized engine control of the car.When the light comes the computer stores a numerical code that can be retrieved with a scan tool or code reader.If you are not experienced with diagnostics you need to take the car to a mechanic,because sometimes a code can fool you and you can change a good part.An example of this would be reading a code that the oxygen sensor is reading a lean condition setting the light on. but the real issue is a bad fuel pump not supplying enough fuel to the engine. On the code alone you would be inclined to change the sensor when it was not the problem.

Posted on Nov 26, 2008

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Posted on Jan 02, 2017

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1 Answer

2003 gmc envoy... I was told i needed a fan clutch.... Then. Next thing i know check engine soon, reduce engine power... Whats going on then computer... P1221, 1271, 1635 still not fix


if you were told that the fan clutch needed replacing and you did not do that , then the engine light and the loss of power would be a result of overheating of the engine and it going to limp mode
take it to a gm service centre for a explanation of the fault codes

Feb 12, 2017 | 2003 GMC Envoy

1 Answer

Liftgate hydraulics stopped working 2003 GMC Envoy SLT


Yes this is electrical. Start by checking the fuses.

Jul 19, 2008 | 2003 GMC Envoy

1 Answer

How to reset service engine soon light off on 2002 gmc envoy


First have scanned for codes could be something wrong. Then fix the problem and use the code scanner to reset light

Jan 16, 2017 | 2002 GMC Envoy

1 Answer

How do i reset the service engine soon light?


On most gm you remove the positive and negative posts from battery and touch them together for at minimum 15 minutes. This will clear computer of codes but if you have a problem it will come back.

Mar 15, 2015 | 2003 GMC Envoy

2 Answers

How to reset service engine soon light


The engine light is on whenever there is an issue with the vehicle. To reset the light you would have to fix the problem and then clear the code with a scanner otherwise the light will come back Just resetting doesn't fix it.

Jul 08, 2012 | 2003 GMC Envoy

1 Answer

I have GMC envoy 2003 and the problem is the service engine soon light all the time and I recently changed the camshaft sensor and the lamp still there


What code is popping up fo the service engine light? If you don't have a reader, take it to an Autozone or a place that will read this light for free. Let us know what the code is to help further, as without this, it could be many different things.

Mar 18, 2011 | 2003 GMC Envoy

1 Answer

Service engine soon and reduced engine power


disconnect batt. for 30 min. then reconnect,if no problem exist the lights will go away

Dec 20, 2009 | 2003 GMC Envoy

2 Answers

I have a service engine soon light and the code that appeared when check is 1481, do you know what this means?


Service Engine Soon (SES) or Check Engine Light On, DTC P0480, P0526/P1481/P1484 Set (Replace Engine Cooling Fan Wiring Harness) #05-06-02-012B - (10/19/2006)

Models:2004-2006 Buick Rainier
2002-2006 Chevrolet TrailBlazer, TrailBlazer EXT
2002-2006 GMC Envoy, Envoy XL, 

Some customers may comment that the Service Engine Soon (SES) or Check Engine light is illuminated. This condition may be intermittent and upon investigation, the technician may find either DTC P0480, P0526, P1481 or P1484 set.

This condition may be caused by the cooling fan harness chaffing against the plastic guide it routes through. This contact may damage the insulation of the wires enclosed in that harness.

Replace the wire harness: 
Part Number 89024920 Description Harness Assembly, Engine Cooling Fan Wiring

Good luck and keep me posed. 

Aug 11, 2009 | 2003 GMC Envoy

2 Answers

'service engine soon' light


Take it to autozone and have it scanned.

Mar 16, 2009 | 2003 GMC Envoy

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