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2010 chevy equinox 2.4
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950 Posts
You could just rebuild the whole motor burning all that oil causes a ton of buildup on the valves and ruins everything. While your burning oil that p0420 will come back. Rebuilding the motor can actually be cheaper than buying that many catylitic converters. You could run a bunch of gumout and fuel injector cleaner ECT and reset the computer and hope it clears up your issue but a ring job is your best bet.

do not want to give the local stealership the pleasure of bending me over their counter
Lmfao
 

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Registered
2010 chevy equinox 2.4
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950 Posts
If there is something undone there will be a seperate codes. It could be an exhaust leak butt most likely the catylitic converter is poisoned from burning all that oil and carbon buildup.
 
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