Clogged Catalytic Converter P0420. Chevy Avalanche, Silverado

[@chancesmall7026]

They guarantee that it’ll clean it, what they meant by depending on vehicle conditions was if the cats honey combs filter are shattered it can’t fix it same thing if you have a bad 02 sensor that’s causing the code it’s unlikely that it’ll fix that. Some do clean o2 sensors and full system like the cataclean bottle

[@fredeichel6414]

Why did you not shows us the scope readings again.. Curious.

[@teesaht473]

Nice man, I was thinking about trying this stuff

[@RustBucketRepair]

It worked for me! Let us know how it works for you!

[@dogfeva4319]

@@RustBucketRepair did the light ever come back on I have a 2005 chevy Silverado 5.3 been using unleaded fuel don’t know if that’s why it came on??

[@RustBucketRepair]

@@dogfeva4319 unleaded fuel, is there another kind?

[@dogfeva4319]

@@RustBucketRepair in DALLAS tx we have 87witch is (regular unleaded )and 89 which is (premium ) that one has 93 %octane

[@RustBucketRepair]

@@dogfeva4319 but they are all unleaded. 87 is all your truck needs.

[@gigiszoo5377]

Update?

[@RustBucketRepair]

Only lasted a few months, then the check engine light was back.

[@gigiszoo5377]

@@RustBucketRepair appreciate it