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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 overheating 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
    Ok so my question is ," Is there an aftermarket variable valve timing controller" available for the 4.2 i6? I was told by several GM techs that a vafc will do the trick.... As well as greddy "e-manage"/..... I know that alot of the vvt cars severly benefit from a controller,,,,, One of my...
    vafc vvt controller
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