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pcm tune

  1. Need guidance 4.2l mods

    02-09 Vortec 4.2L I-6 Engine and Drivetrain
    So I recently purchased a 2005 trailblazer with the 4.2 I’ve read about pcmforless but all the feeds are real old is there a better option today? also any other tips on stuff I can do to my stock trailblazer to bake it any better would be amazing. Thank you in advance
  2. New Ideas for Manual Swap?

    Transmission Mods
    Hey all, I have a for all intents and purposes* stock 2006 Envoy I6, 4wd. It was not always mine, but to my knowledge, the transmission fluid was never changed, and it's got around 185K miles. Knowing the tranny is living on borrowed time, could it be swapped out with something like a T56...
  3. Getting Lift and Offroad tires

    TrailBlazer / Envoy Chat
    Hello guys, It's been a while since i posted on trailvoy. The reason I made this thread is because I'm interested in switching from my chrome rims to off-road tires and also wanting a lift to go with that. I am brand new to this area, so I apologize for the questions. I did take a look at this...
  4. Case relearn?

    Engine Tunes/Mods
    i plan on getting a pcm tune from pcm4less. i have spare pcm from a wrecked envoy from work, the thing is both of the pcm's are out of a 2004 envoy, which have the problem of having to be reflashed with the lastest software. my plan is to send in the spare so i have the original from my truck. i...
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