Code P0420 problems

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Chevrolet Trax 2017 Chevy Trax  117606 miles
Replaced starter and it still only cranks sometimes other times it just clicks! Also soon as they replaced the starter the check engine light came on shows code p0033 bypass valve open! Also shows catsletic converter code p0420 I’m really struggling to figure all this out! Anyone else have these problems?
Resj60 from United States 2 years ago  
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3 reports 
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