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Yukon 2015 6.2 denali

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  1. Yukon 2015 6.2 denali
    I’ve lost all compression on bank 2. Misfire on cyl 2 then all on bank 2. Mechanic checked compression and 0 on all 4 cylinders. Bank 1 normal. Changed plugs before I drove it to him and when he pulled plugs they were black soot. Running fine until wife put it in park then it started shuddering. Any ideas?
  2. Yukon 2015 6.2 denali
    I’ve lost all compression on bank 2. Misfire on cyl 2 then all on bank 2. Mechanic checked compression and 0 on all 4 cylinders. Bank 1 normal. Changed plugs before I drove it to him and when he pulled plugs they were black soot. Running fine until wife put it in park then it started shuddering. Any ideas?
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