Turn Ignition on, do not start, put into neutral, press gas pedal 3 times, holding it down on 3rd press. Light will go out. This is for guys like me who change their own oil. The CEL will go off after 5k to let you know it's time to change your oil. If your like me, changing oil every every 3k, you can expect it to come on soon after.
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hey guys, i got a question on this. this morning i went out and started my truck and my check engine light came on. runs just fine, no idling problems, normal gas milage. but it is time for a oil change. by the way itsa 04' 1500. does it not have a change oil light? i haven't got a chance to scan it. just wondering if thats what its telling me?? anything will help. thanks

 

and my engine oil life reads 40%

 

the check-engine lightis completely seperate from a change oil light

 

I was gonna say, neither my 03 Sierra, nor my dad's 00 Sierra have ever turned the check engine light on to tell you to change the oil. The Change Engine Oil indicator does come on at about 3,000-4,000 miles though. Depends on what it's set on. I believe that is something the dealer can calibrate with their computers. I know for a fact VW's can be calibrated in 500mile incriments as far as when you want the light to come on.

 

fixed it. stupid gas cap. probably should of checked that first. i think the code was 442. evap control system leak(small) im glad it was nothing else.