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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. 02-09 Vortec 4.2L I-6 Engine and Drivetrain
    This TB has been giving me a run for my money. I have the 02 TB LS, 5.2 I6. Was running decent enough despite having an evap code I haven't handled yet, until this morning. *note, it has been VERY loud upon starting over the course of the last week or so- still undiagnosed as well. Noticed...
    2002 inline6 over heating trail blazer ls
  2. 02-09 Vortec 4.2L I-6 Engine and Drivetrain
    I have a 2004 trailblazer ext 4wd I6 that is overheating after driving approximately 30min-an hour. I have replaced the fan clutch, blades, shroud, water pump, thermostat, serpentine belt, coolant, and cap… it has gotten better, meaning it takes longer to overheat but it still is overheating I...
    over heating trail blazer
  3. OEM Issues
    So my dad's 2003 Envoy has been over heating for a while, but about 2 weeks ago the oil pressure gauge was going low, so he took it to a mechanic, who changed the oil pressure sensor, but when he did, the oil pressure dropped to 0 and stayed there. So he had him change it back, and it's still at...
    envoy oil pressure gauge oil pressure sensor over heating
  4. OEM Issues
    My 03 has about 90 thousand miles on it. The other day I was driving and the check engine light came on. I hooked up my scanner to it and it was giving the code for the thermostat. I changed the thermostat in it and now it went from running too cold to running way over 210 but not in the red...
    over heating thermostat too hot water pump
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