I have a 2007 cadillac dts and the catalytic converter was stolen and I replaced it, now my check engine light won't go off, I reset the computer and after about 5 hrs of driving it comes back on.
Have you had your codes read? Auto zone will read them for free. Post code numbers back on here so we can better help you figure out what's wrong with your vehicle.
you did the work yourself? you connected the sensor? was anything damaged when they cut it off?- the light may have to be reset-
Yes, I agree, maybe you forgot to reconnect the 02 sensor, because I would assume when they stole the cat, they snipped the wires.
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