GM Repair Problems? Ask GM Repair Expert Now.
I am sorry your having this problem
which converter was replaced ?
how does it run when driving on the road other than the code P0430 keep being set ?
were they GM converters ?
and both O2 sensors replaced for that bank ?
and i am assuming the wiring to those O2 sensors is good ?
when the code is cleared how long before it will reset ?
at this point with new O2 sensors and GM cat converter the only things left to cause this issue is to be sure there are NO vacuum leaks and the injectors are pressure cleaned
if the code still comes back then the only thing left is to update the programming in the computer as there has been a few updates to correct some O2 sensors reading wrong and the programming in the computer updated should correct any of those issues
if it STILL does this after updated programming then there is nothing left but a bad computer
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