2014 Silveraldo, GM Converter issue

[knighthawk3]

Just recently spent over 10k at 3 different shops over a month and half timeframe, to correct a Converter issue.  Keep getting a PO420/PO430 codes, so went and had the converters replaced along with the O2 sensors, plugs and wires.  Problem came back the next day, had the multiple dialogists ran and O2 sensors replaced again.  Came back on the next day, took it to a third shop and was told that the converters were not GM converters, so had the new ones replaced with new GM ones, and new GM O2 sensors.  So far so good.  On day 2.  Has anyone heard of this issue, that none GM converters will not work on these trucks?  Also, had the ECM replaced prior to that.  Never had this type of problem with any Chevy I have ever owned.  

[swathdiver]

5 hours ago, knighthawk3 said:

Just recently spent over 10k at 3 different shops over a month and half timeframe, to correct a Converter issue.  Keep getting a PO420/PO430 codes, so went and had the converters replaced along with the O2 sensors, plugs and wires.  Problem came back the next day, had the multiple dialogists ran and O2 sensors replaced again.  Came back on the next day, took it to a third shop and was told that the converters were not GM converters, so had the new ones replaced with new GM ones, and new GM O2 sensors.  So far so good.  On day 2.  Has anyone heard of this issue, that none GM converters will not work on these trucks?  Also, had the ECM replaced prior to that.  Never had this type of problem with any Chevy I have ever owned.  

 

Yes, there are crummy converters being sold as suitable for use when I wouldn't use them as a door stop.  Some last a year, some fail right away as the Chicoms don't care about you, just your money.

 

The computer system in these cars also do not take kindly to aftermarket sensors.  They are not up to the task either most times.

 

Converters ought not to fail for no reason, there's usually a problem with the engine that takes them out.  In my case it was AFM failure.  I replaced my cats 4 years ago with Magnaflow cats and y-pipe and no problems since.  Having said that, it is not unusual for the codes to set within the first 100 miles or so as they break in.

Edited June 4, 2022 by swathdiver

[knighthawk3]

Yeah, Im gonna try to get some money back on the aftermarket ones, since they are only a couple months old, with 1 of those months the truck wasnt even being ran.  We'll see on monday, Thanks

 

[Gustavo Gomez]

On 6/5/2022 at 2:05 PM, knighthawk3 said:

Yeah, Im gonna try to get some money back on the aftermarket ones, since they are only a couple months old, with 1 of those months the truck wasnt even being ran.  We'll see on monday, Thanks

 

Did you fix your problem?