mineurbiz Posted August 15, 2013 Share Posted August 15, 2013 1999 Silverado with a 4.3L throwing code P0430, that when you look it up talks about either a catalytic converter or 02 Sensor. Just wondering is there a way to test the sensors? Quote Link to comment Share on other sites More sharing options...
SAND~~SNAKE Posted August 15, 2013 Share Posted August 15, 2013 Its a cat Mark, The sensors can be tested but the only one you need to test is pass side post cat, An exhaust leak on the same bank will cause this condition. Unless you have an 02 code you can rule that out. If you want a copy of the diag flow charts let me know? Quote Link to comment Share on other sites More sharing options...
dunefreak Posted August 15, 2013 Share Posted August 15, 2013 meow Quote Link to comment Share on other sites More sharing options...
mineurbiz Posted August 15, 2013 Author Share Posted August 15, 2013 Thanks!! Already been through the ringer on this truck, it is 17 year old kids truck and just trying to help him out. Just had it's ignition module replaced, do to not starting, now this, which looks like over $300 just for the cats now. Hope that this is something I can do myself, rather than paying a shop, but I guess that depends on if it is welded on or bolted. Time to crawl under this thing and see. Quote Link to comment Share on other sites More sharing options...
bp-guy Posted August 15, 2013 Share Posted August 15, 2013 If it is bolted on I suggest you weld it on. Cat's are being stolen all the time. My dads was stolen last year. He said it scared the crap out of hime when he started his Tacoma at 6am! Quote Link to comment Share on other sites More sharing options...
mineurbiz Posted August 15, 2013 Author Share Posted August 15, 2013 If it is bolted on I suggest you weld it on. Cat's are being stolen all the time. My dads was stolen last year. He said it scared the crap out of hime when he started his Tacoma at 6am! Good info!! Nothing like a straight pipe Tacoma!! Quote Link to comment Share on other sites More sharing options...
dunefreak Posted August 15, 2013 Share Posted August 15, 2013 More than likely it's part of the Y pipe. Quote Link to comment Share on other sites More sharing options...
mineurbiz Posted August 15, 2013 Author Share Posted August 15, 2013 More than likely it's part of the Y pipe. There are two correct? Quote Link to comment Share on other sites More sharing options...
dunefreak Posted August 15, 2013 Share Posted August 15, 2013 Yes, left bank and right bank. It's one assembly unless you have it cut and a cheapie welded in. Sometimes they're junk, sometimes they work. 1 Quote Link to comment Share on other sites More sharing options...
mineurbiz Posted August 15, 2013 Author Share Posted August 15, 2013 Cool, that is what I found when I looked it up, just thought I would verify with the GM Tech guru's!! Thanks!! Now I just need to research a good/decent price and quality Quote Link to comment Share on other sites More sharing options...
sanddunesaddict Posted August 16, 2013 Share Posted August 16, 2013 just do not get a "high flow" cat...they definitely do not last Quote Link to comment Share on other sites More sharing options...
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