MagnaFlow Catalytic Converters - No More Mr. Bad Converter!
2. GM's 4.8- and 5.3L engines in both '99 and '01 trucks used the round-style catalytic converters. These cats were prone to failure and actually had a tech bulletin placed on them for replacement if failure occurred. If your truck is running the round cats and you have a problem with them, call GM on the posted bulletin, because you might get them replaced free of charge. View Related Article
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