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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
    My 2003 TB all of the sudden started running bad at a stoplight. Check engine light flashed and then came on steady. Checked code when I arrived home. P0306, misfire cylinder 6. After going through the forum I decided to swap ignition coil 2 and 6 to see if the problem would move to cylinder 2...
    p0300 p0301 p0303 p0304 p0306
  2. OEM Issues
    So I have a 2007 TB with about 113k miles, it has the I6 engine. I am very familiar with these engines as in the past I already have had an Envoy for many years and put over 175k miles on it. A few months a ago I started to get the cylinder 4 misfire code and I read about every forum on here...
    idle injector misfire p0300 p0304
  3. OEM Issues
    Well this is a long drawn out story that is worth writing and I thought I'd take a few minutes to share some experiences worth hearing about. All started a week ago, I was towing my RV back from Indiana and the TB started overheating, Check engine light was on and it turned out to be a bad fan...
    engine noise fan clutch p0300 p0304 water pump
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