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02 Tahoe Z71 “Z” VIN, Catalyst plugged fully one night so I replaced with brand new cats, 02 sensors, plugs, wires, coils, Intake gaskets knock sensors & harness. Drivers side plugs were heavily carbonated, pass side was normal, seafoamed it then I replaced the drivers side as the rest were a couple months old, 119 miles since then mostly interstate, Im still getting lean codes, knock sensors, misfires and bank 1 sensor 1 02 heated fault. I’m not sure how to tackle this issue any further. Any advice would be Gospel to my ears at this point!!!! Still blowing carbon out the pipe and just not sure how long to expect this, Michigan we cut them off and straight pipe, but now I have emissions here in Texas.
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