Question about 2002 GMC Envoy

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Spark Plugs Today one of my spark plugs went out, I need to replace it. What kind does it need? Is it best to replace all of them at once?

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  • aaguailar_ke Dec 01, 2008

    well i know its a v6,and has the option of four wheel drive

  • aaguailar_ke Dec 01, 2008

    thank you for your advice!

  • aaguailar_ke Dec 02, 2008

    So we changed all 6 spark plugs, and it still runs rough, and the light is still on. Please see my last posting. Hope you have some advice....

  • Marvin
    Marvin May 11, 2010

    U never said a thing about running rough, what is the issue with the engine, any trouble codes??

  • Marvin
    Marvin May 11, 2010

    I don't show a V6, only a straight six or L6 go to this link and look up the part yourself.

  • Marvin
    Marvin May 11, 2010

    1 we need to know what engine you have, also 4X4?



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  • Master
  • 651 Answers

Yes, i'd replace them all. any auto parts store will be able to tell you which plugs to get. you can change just the one if you'd prefer.

Posted on Dec 01, 2008

  • dan Dec 01, 2008

    ur welcome



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Best bet is the OEM plug that came with it. Dodge/Chrysler normally comes with Champion plugs.

They are good and you won't go wrong with them. Your owners manual an local parts store as well will have the part numbers.

As far as mileage goes, proper maint such as air filters, oil changes, and tune ups are the biggy. Second, driving gently instead of like you are in an episode of COPS can make a huge impact on economy. Proper tire inflation is helpful also.


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