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Lv 6
? asked in Cars & TransportationMaintenance & Repairs · 9 years ago

2000 Sonoma "service Engine Soon" light?

I bought this truck about 2 mos. ago. It was a 1-owner vehicle & is in nice shape. All of a sudden this service light came on.

I will certainly get it "serviced" if it actually needs it, but if it is just a tune up, I can do that myself.

Anyone have a clue about this light coming on? Veh. has about 100,500 on it.

Update:

Thanks for the detailed replies! I'll get myself a code reader & see what comes up. I just had the oil changed on Friday...on both vehicles & had the filters & air filters swapped out too.

Pedro..I can do without the condescending tone. As I'd mentioned, I just got this vehicle & know very little about GM's, as my last several cars were all European. Help is always good. Attitude never is. Just something to ponder...that's all.

5 Answers

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  • croswell
    Lv 4
    4 years ago

    2000 Sonoma

    Source(s): https://shrinke.im/a8mpB
  • Assahola
    Lv 6
    9 years ago

    a tune up is oil change with filter just air filter spark plugs cap rotor if applicable and the fuel filter there are some other small parts like the pcv valve too theres not much to it on these new cars and you can buy a code scanner for it for pretty cheap the reader has to be obd2 and as far as why its on it could be many things i could guess that the mass air flow sensor (this is 1 common reason to make the light come on) is dirty it could be signaling maintenance you need to check the owners manual for that good luck

  • mailbox1024
    Lv 7
    9 years ago

    The service engine light is the indicator telling you that you have reached a predetermined amount of miles on the truck and it is time to change the oil and filter. Then read the owners manual on how to reset the service light. that's it!

    GL......

  • pedro7of9
    Lv 7
    9 years ago

    you can tune it but know nothing about check/service engine light??

    well 100K is about 20K past due a tune

    get FREE scan any auto parts store,,hopefully the one ur getting parts at,,,a tune is more than just plugs i assUme you know from reading your shop manual [25 dollars at the auto parts store]

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  • Jacob Jabbari
    9 years ago

    you can serviced it yourself but its best to take to a professional as they wont miss bit out

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