Question about Chevrolet Suburban 1500

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Service engine light

My 1999 chevy surburban service engine light went on I took it to advance autos and used their diagnostic tool and the codes that appeared were P0102 and P0300 what do these mean and how do I fix it

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  • smokie67 Jul 23, 2008

    code p0102 on a 1999 gmc k2500 suburban and no g/s reading on the scanner

  • Anonymous Nov 30, 2008

    hello I have a 2001 gmc safari that is very hard to start when cold. when I finaly get it running and warmed up it idles low, runs rough and hesitates when accelerating. when it was running I noticed the check engine light on so I read the codes and got "p0300 and p0102. also when I was starting it cold it would fire a bit and backfire through the intake then I got it going and it was misfireing on one cylinder for about five minutes. it has had starting problems twice since I had it this year as its been below 0c when Im starting it.

  • Anonymous Jan 09, 2009

    my truck is a 2003 s-10 as well and is sluggish starting. If I turn the key forward and wait until the little buzz sound stops (maybe fuel injector) it does a lot better. When my wife gets in it and doesn't let the sound run it's course it cranks and cranks and never starts till she lets the fuel injector buzz.
    also, the last few mornings i have noticed what seems to be a miss ever so often. truck jerks slightly like it had missed on a cylinder.



  • Anonymous Mar 31, 2014

    Engine light on

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Good Day,

Code P0102 indicates MAF(Mass Air Flow) sensor circuit, low frequency detected

Code P0300 indicates Random Cylider miss fire, meaning missfire in more than one cylinder

The misfire could be a result of the mas air flow sensor being faulty.

Hope this helps for now

Let me know what size motor and if it's 2wd or 4wd and I can get detailed instructions for replacing

Posted on Jul 05, 2008

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