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  1. 02-09 Vortec 4.2L I-6 Engine and Drivetrain
    I have an ‘03 gmc envoy with the 4.2 vortec in it. I hit 250,000 miles the other day and got a funky knocking noise. I’ve changed the cam position sensor and the vvt solenoid thing but it still knocks. Any other ideas? I have a video of the knock linked below please help :) 4.2 vortec engine...
  2. General
    I am on Vancouver Island BC and have a possible dead engine. Heavy knock and barely runs. 26x,xxx km, 4.2 i6, no other issues that have presented. Clean title, cv axels 3 years old, no 4WD issues, In decent condition, red, has some scrapes, all electronics work, just put new Nordman WR SUV tires...
  3. The "How-To" and DIY Section
    Hey Guys, Anyone ever parted-out one of our TB's? My 08 LT is seized up, I need to get as much $$ out of it as possible (upside down by $4.5K).:duh::mad: Thought about stripping it down for Ebay and Craigslist....what kind of return range would I be looking at? Thanks
  4. Engine Tunes/Mods
    I know, weird question huh? OK, here's the deal. I have a 2006 Trailblazer EXT/LT with the 4.2's been solid for the entire 235,000 miles with not many issues at all. Since it has high miles, I frequently check the oil at least once every two weeks if not more and have the oil...
1-4 of 4 Results