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DMB

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  1. DMB
    P0137 bank one sensor two low-voltage. P0172 fuel trim system rich bank one. P0300 engine misfire detected.
  2. DMB
    P0420 showed up after the engine had a lifter repaired. Friend brought it to me to change cat. And o2 sensors. Shop told him bad convertor so I changed them , ran fine when I got it just had engine light
  3. DMB
    Changed convertors and o2 sensors. Pretty straightforward and now numerous misfires, surging pretty much limp mode. Put old o2’s back in same problem. 2020 5.3l
  4. DMB
    DMB joined the community
  5. DMB
    Changed convertors and o2’s now run like crap. Limp mode, rpm’s bouncing, no power. Put old o2’s back in no change. 2020 Silverado 5.3l

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