catalytic converter

[Austin Merritt]

2004 yukon, warning lights in dash stay on . code says its the catalytic converter is bad. My queston is , can you run straight pipes with out screwing up the computer. My yukon has two converter,and the code doesn't say which converter is bad.i dont want cheap to be costly.

 

[c19dale]

if you get under there and hit them with a mallet, you can probably hear one rattle. Thats your bad one. (My driver side is bad right now and rattles like crazy.)

here is an article on how to make Mil eliminators to run without cats. http://zx2racing.com/pages/articles/mileliminators.htm

or you can get a programer.

 

[dbdolan]

One of my cats went bad, I took it to a local muffler shop and they cut out both cats and welded up 2 aftermarket cats for about 275$. If you want to find out which one is bad, get you one of those temperature guns and take a temp of them after you have run the truck for a while.

 

[01smellytahoe]

Check your local dealer, you may still be under the factory warranty for convertor replacement. Or you can give me your vin and I will run a vis for you. I work at a Gmc cadillac dealer in the service department.

 

[greengumby]

Check your local dealer, you may still be under the factory warranty for convertor replacement. Or you can give me your vin and I will run a vis for you. I work at a Gmc cadillac dealer in the service department.

X2 ,

cats have a 100 k miles warranty under emissions , at least mine has

 

[5thWardTexas]

One of my cats went bad, I took it to a local muffler shop and they cut out both cats and welded up 2 aftermarket cats for about 275$. If you want to find out which one is bad, get you one of those temperature guns and take a temp of them after you have run the truck for a while.

(Dbdolan, what shop fixed your cats? I'm in Houston as well.)

 

[Z71Heat]

actually the rattle method is innaccurate on the 00-06 tahoes. If you hit the cat with a mallet NEW OR OLD it will rattle. BECAUSE, the oxygen sensors on ALL the Tahoes have a small steel cap on the end of them that RATTLE ALL THE TIME. I replaced my CAT with a brand new Magnaflow cat system. After I installed them the RATTLE was still present. It comes from the 4 oxygen sensors that thread into the cat's.

 

[5thWardTexas]

actually the rattle method is innaccurate on the 00-06 tahoes. If you hit the cat with a mallet NEW OR OLD it will rattle. BECAUSE, the oxygen sensors on ALL the Tahoes have a small steel cap on the end of them that RATTLE ALL THE TIME. I replaced my CAT with a brand new Magnaflow cat system. After I installed them the RATTLE was still present. It comes from the 4 oxygen sensors that thread into the cat's.

How much was the brand new Magnaflow cat system. And if you got it online, where?

 

[dbdolan]

Hey 5th ward Texas......I sent you message on where I got my cats replaced up in Conroe and Porter area.

 

[Z71Heat]

How much was the brand new Magnaflow cat system. And if you got it online, where?

I purchased the magnaflow complete cat system from performance peddler.com for 330.00 bucks. GREAT PRICE!!! Here is the link

http://www.performancepeddler.com/yourcart.asp

I also bought the magnaflow complete exaust kit while I was at it. I figured I might as well just do it all. It sounds great and I have no more cat codes or troubles.

 

[Tahoe07]

definitley check on warranty before you spend any money.

It may just be your Oxegen sensors. If they are bad they send the same code I believe.

 

[greengumby]

I purchased the magnaflow complete cat system from performance peddler.com for 330.00 bucks. GREAT PRICE!!! Here is the link

http://www.performancepeddler.com/yourcart.asp

I also bought the magnaflow complete exaust kit while I was at it. I figured I might as well just do it all. It sounds great and I have no more cat codes or troubles.

Thats an awsome site i bookmarked it ..thanks man!

 

[Z71Heat]

definitley check on warranty before you spend any money.

It may just be your Oxegen sensors. If they are bad they send the same code I believe.

The oxygen sensors werent bad. I have driven alot of 2nd gen tahoes and yukons, they all rattle to some extent.

 

[Z71Heat]

Thats an awsome site i bookmarked it ..thanks man!

Yea it really is one of the BEST sites out there!!! Great prices, free shipping and great customer service!

 

[dbdolan]

(Dbdolan, what shop fixed your cats? I'm in Houston as well.)

I sent you a message with the info. did you get it?