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Thread: GMC Yukon XL Denali 2011 O2 disabling

  1. #1
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    GMC Yukon XL Denali 2011 O2 disabling

    I have GMC Yukon XL Denali 6.2 AWD 2011. Catalyst system cutted off. This is my tuned file and i have some concerns about flags and DTC errors, can someone advice which one can be switched off?
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  2. #2
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    And this one stock file.
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  3. #3
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    You turned off all the O2 codes. You should turn back on all the sensor 1 codes. (pre cat O2s) And there is no reason to disable the system rich and lean codes.

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    Ok thanks a lot, it was as well my doubts as well as it was advice from one of the tuners.

  5. #5
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    Quote Originally Posted by 2xLS1 View Post
    You turned off all the O2 codes. You should turn back on all the sensor 1 codes. (pre cat O2s) And there is no reason to disable the system rich and lean codes.
    Can you please take a look now at my tune DTC's? And on the pic is it necessary switch off as it related to rear sensors. Thanks a lot!
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