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2002 2003 2004 2006 2007 4.2 4wd 4x4 a/c abs actuator air conditioning air suspension alternator amp arnott audio battery black bose brakes check engine light clean coolant custom differential electrical engine envoy exhaust ext fan clutch fuel fuel pump fuse gas gmc grille headlight headlights hid hids hvac idle ignition ignition switch install interior introduction leak led lift lift kit lifted lights misfire mod mods no start noise oem offroad oil olds bravada oldsmobile bravada p0300 paint pcm power steering radio rear reduced engine power replace rims rough idle sensor shocks speakers ss stalling starter stereo struts subwoofer suspension swap switch tbss tccm throttle body tires trailblazer transfer case transmission transmission problems vibration water pump wheels wiring xuv
  1. Engine Tunes/Mods
    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...
    4.2l oxygen rochester sensor tune
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