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  1. OEM Issues
    Hey Guys, I have an 2005 TB with the 4.2L. Lately I have been having problems with intermittent power loss under a load (acceleration). The engine RPM remains the same yet there is decreased power. Everything is telling me it is a partially plugged CAT, but the local chevy dealer is blaming it...
    cat loss of power mpg o2 sensor
  2. TrailBlazer / Envoy Chat
    hey so i wanted to take out my catalytic converter, is there a way of doing it without having a check engine light appear? I just want more noise. Thanks, again Martin
    cat cat converter cat-back catalytic converter
  3. Exhaust Mods
    Does anyone have a good thread on how to change a Cat Converter for a 2003 Trailblazer. Also, any opinions on a direct fit vs. weld on type?
    cat catalytic converter trailblazer
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