2012 chevrolet equinox 135,000miles 2.4l p0420 keeps coming back. i Fix code p0420 on chevrolet cruze, chevy sonic catalyst system P0191 equinox
FIX CODE P0420 ON CHEVROLET CRUZE, CHEVY SONIC Catalyst System
P0420 cruze catalyst threshold
P0191 chevy equinox
P0420 chevy equinox issue and solutions to fix properly .
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