Are the aftermarket catalytic converters just as good as GM converters?
Asked by Traverse7 Mar 14, 2018 at 11:14 AM about the 2009 Chevrolet Traverse 2LT AWD
Question type: Maintenance & Repair
I have a 2009 Chevy Traverse LT AWD. We just had to replace the engine. I
am now getting a PO420 OMDII code which probably means my catalytic
converter firewall side has gone bad. I was told that the aftermarket converters
will not work as well as GM ones and will cause the engine light to come on
again. Is this the case?
3 Answers
Thanks for your help. The dealer and another shop took a look at it and said replace the converter. The article you sent had this line toward the end and it backs up what the dealer said: "We strongly recommend that if you need to replace the catalytic converter that you replace it with an original manufacturer brand unit (i.e. get it from a dealership). Second choice would be a high-quality replacement part such as a 50-state legal cat. There are many stories in our forums where folks replaced the cat with a cheaper aftermarket one only to have the code return shortly thereafter." I want to replace it myself, but it that converter looks like a booger to get to. Thanks again.
Thank you. Looks like I'm gonna find the cheapest GM cat online and take it to a shop. Dealer was going to charge around $1132.00 to repair. They have always been great to us, but I am just trying to go cheap as I can after spending money on the new engine. Thanks again.
As for a crap shoot on aftermarket you are right but It can be done .did new car in drive 120$ cat from Canada .6 months later all still good
