2011 Terrain gauges bounce to zero and vehicle hesitates while driving

JMaynard72

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I hooked up my code reader to it and only got codes for bad O2 sensor bank 1 sensor 1 and the P0420 catalytic system efficiency codes. I replace both the upstream and down stream catalytic converters and both O2 sensors but it is still doing the same thing. Any ideas are appreciated. It is the 2.4L engine.
 
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