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  1. C

    Multiple o2 sensor failures help please

    No other issues what so ever truck has always ran great until it start this funny idle then throws a code for upstream O2 then it goes flat and sluggish till I pop a new one in
  2. C

    Multiple o2 sensor failures help please

    Only the the upstream o2 keeps burning out but I was thinking about changing them all this go around also
  3. C

    Multiple o2 sensor failures help please

    Ac delco from the dealer been burned on aftermarket electrical parts before so I just pay a lil more sometimes
  4. C

    Multiple o2 sensor failures help please

    so I have a 2008 2wd Yukon 202,000 or so miles and since sept last year it has gone through 3 upstream O2 sensor and is now needing a fourth one truck has had zero prior issues that I know of and I've had the truck since it had 16000 miles on it been a awesome truck but something is causing this...
  5. C

    handheld tuner

    just sent them a email thanks
  6. C

    handheld tuner

    hi new here I have a 2008 gmc Yukon slt had since 14000 miles now has 132000 love the truck but recently became concerned with the afm or dod I have no issues but would like to tune it out before I have any looking for help on this thanks

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