On Board diagnostics code P0430

[HumminNBoatin']

My dealer told me that all GM vehicles have a 80K warranty on Cats. They are required to have it. I am looking at my service records. Looks like the code i threw was P0420: Low Efficiency Bank1.

Tech notes: replaced left side cat. Convertor

This was done at 54K miles. total work billed to $570.

Customer Cost: $0

I do not have an extended warranty.

[Hucky]

Originally Posted by HumminNBoatin'

My dealer told me that all GM vehicles have a 80K warranty on Cats. They are required to have it. I am looking at my service records. Looks like the code i threw was P0420: Low Efficiency Bank1.

Tech notes: replaced left side cat. Convertor

This was done at 54K miles. total work billed to $570.

Customer Cost: $0

I do not have an extended warranty.

Right you are, Thanks for your contribution, much appreciated, I just learned the same thing, just coming home from cerritos hummer, had to leave her there, they are going to put her through some tests to solve this, so far they think its the cat, not sure which one, but one of them.

Cheers
Hucky

[H2 Bill]

I recently replaced both of mine within a months time.
Bank 1 drivers side, bank 2 passenger side.

[Hucky]

Anybody know how these rigs would run without the cats in place?

Seems like the cats have problems!
My HD2500 has the same motor but no cat problems?

Geez I miss 1969 when your worse problem was a glass pack blew out.

[IRA51]

if you remove both cats and buy a pair of sim's and screw them into the bung where the downstream O2's were you will have no mil a nice sound and more power . just don't expect to pass emission inspection. also some times if you put some Seafoam or injecter cleaner in the tank the cat gets clean and the mil go's out,not always but sometimes. ran my 2000 Z28 with a 382 stroker,long tubes and a hacked computer with sim's for 4 years and never saw a mil the whole time ,they will run just fine without cats . Summit used to sell simulaters . but shame on you for wanting to run catless and killing our ozone layer.

[Hucky]

The service rep called and said the one of the Cats is bad, ordered and replaced tommorow sometime, under the 80,000 mile warranty.

Asked him about the Mirrors on the 2004 being loose and he said hed see what he could do via a managers approval for replacement upgrade even though Im ou of warranty. Well see.

Thanks for the replies

Too much mod work for taking the cats out 100% so Ill pass.

Hucky