cat finally went at 149K

**dozier13** · 06-28-2007, 06:14 AM

hey everyone. my 99 trans am is throwing a code p0420 which basically means that I need a new cat. figured this would happen sooner or later. I had the other side replaced when I first got the car. is this something that I can do or will I need to have a shop do it. the one that I got before I just had a welding shop weld it in for me but the drivers side looks like it actually bolts into the manifold. is there a direct replacement or can I just go get another one and have my welder wled it in place for me again? Thanks

Chris

**ssxcytmnt** · 07-04-2007, 06:34 AM

HI, I just replaced my drivers side cat, It had a crack in the neck of the converter, It had a tapping sound and threw me a PO137 code. I shopped around all over, the cheapest dealer part was $420 and online i found it for $237.89 Its made by Eastern....The only draw back is you have to buy 2 bolts/washers/lockwashers/nuts,for the aft side, you cant use the original hardware. costed about $3, which i got from home depot. It comes with a gasket as well. I left you the links for the place i bought it from (covertergeeks.com), and also you can do the research from several other sites which i left the links from as well. I went thur all the links and they all wanted the same price of $259. A while back i also had the code po420 and replaced my passenger side cat. I bought it from the dealer and it was also a bolt on. I wish i would have done more reserch before buying from the dealer. Hope this helps.. R.

http://convertergeek.com/

http://www.google.com/search?hl=en&s...camaro&spell=1

**ssxcytmnt** · 07-04-2007, 06:42 AM

Oh ya, forgot to mention I broke 203,000 miles and car runs great. never been wrecked and had my 1st clutch put in a few months ago. I drove it around the United states for 12 days.. Drove from Fort Worth to denver to utah, to reno, to vegas and home and did great. I was a bit nervous driving thru the desert though.. lol

**racer x z28** · 07-05-2007, 08:20 AM

i got a letter from gm last month it said my cats and all emissions are extened on warraty to 10years, and if you paid for those items to be repaired they would reimburse you
01 z28

**ssxcytmnt** · 07-05-2007, 02:53 PM

Ya , i got the same letter as well, but it does stipulate if your car is under a certin milage. I believe it was 120k miles. I threw mine away since i was at 196k at the time.. Was there a change in the details of the letter sent to you by GM?