How to Identify & Sell Your GM Catalytic Converters

Posted: May 26, 2022


The Team at RRCats.com wants to service your scrap catalytic converter needs and this week we are highlighting GM Catalytic Converters.

Identifying GM Catalytic Converters

What you need to know…

General Motors Company, commonly referred to as General Motors (GM), is an American multinational corporation headquartered in Detroit that designs, manufactures, markets, and distributes vehicles and vehicle parts and sells financial services. GM is the parent company of BuickCadillacChevrolet & GMC. 

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General Motors has so many brands that it owns and operates it leaves a lot of catalytic converter information out there. One of the best things that GM has done is to put serial numbers on about 90% of their catalytic converter units. This has allowed the scrap side to be done much more easily and accurately than other makes like Honda.

Many GM cars have a minimum of one catalytic converter, but most have at least 2-4. This is done to help mitigate the emissions found in cars out there and also cleaner for the environment.

When looking for the serial codes on GM vehicles, they are normally on one of the corners of the catalytic converter or stamped/etched on the main shield. GM is not known for many secondary shields, so we suggest getting some steel wool out to look for those numbers.

There are many types of GM Catalytic Converters:

  • Bread Loafs – Large & Small
  • Pills
  • DPF’s
  • GAP AC
  • Small AC Square
  • Large & Small Flow
  • Beads

 

GM Cats Usually Have 2 Cats…

Many GMs have 2 cats – a Pre-Cat and a Regular-Sized Catalytic Converter.

Identifying Serial Numbers on GM Catalytic Converters

GM does a nice job of stamping the serial numbers on their Catalytic Converters. You can find them on the body of the Catalytic Converter either in the middle, top, side, or on the outer rim. An example of this is in the photo below this GM Catalytic Converter has the serial number: 25129701

How To Find Serial Number on GM Cat

  • Use steel wool to clean the area so you can bring out the serial number.
  • Generally, the numbers start with 126, 127, 251 & 253, which will help give you a better idea of their exact value.

Most Popular GM Catalytic Converters for Scrap

Some of the most popular car models we get asked about when pricing your GM Catalytic Converters are:

  • Buick Lesabre
  • Chevy Monte Carlo
  • GMC Yukon

Tom explains in the video how to find these serial numbers on your GM Catalytic Converter before you send them to our team for quoting.

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