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2004 chevy trailblazer_lt
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4 Posts
Discussion Starter #1
I have a 2004 Trailblazer 4.2L I6 and was wondering if anyone had a tuner or know where I can get the truck tuned. I have been having problems with my O2 sensor throwing a code. I have 110000 miles on the truck and recently put a new catalytic converter and o2 sensor in the truck. Everything was fine for about 1000 miles but now I keep throwing the catalytic converter effiecency (sp?) below threshhold. Does anyone know what the problem could be or know where I can get the code blocked or tuned so it doesn't show up anymore without doing PCM for less or something like that. Thanks!
 

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2003 chevy trailblazer_ls
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1,708 Posts
Welcome to the site. Sorry to say but you might have bought the wrong cat. There is only one, MagnaFlow, that works and does not throw a code. Do a search for the pn.
 
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