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  1. 02-09 Vortec 4.2L I-6 Engine and Drivetrain
    Hi, My issue with the P0171 started awhile ago and I'm still chasing it and got no progress I'm no mechanic and I really need to fix this since on mechanic in my country was able to fix it (I'm not from the USA) so here's what I did so far: -Checked for vacuum leaks with a smoke machine and...
  2. 4x4 Drivetrain
    My '04 TB EXT LS failed inspection (MD) because the shop discovered forward and backwards play in the front propshaft. I took it home and removed the propshaft to inspect it thinking it might be the CV joint going bad. Turns out the play is in the front output shaft of the transfer case...
  3. Rims
    I have an 04’ trailblazer. I wanted to lift it up a bit but also don’t want the hassle of a lift kit. What’s the biggest size tire and rim I can fit on stock suspension?
  4. OEM Issues
    Hello eveyone, I have a 2004 Trailblazer LT model and i'm having a problem with my 4WD whenever i turn my A4WD, 4Hi or 4Lo sometimes it lock in and sometimes it doesn't and i get a flashing light then service 4x4 check light when it works i can hear the transfer case motor whirring and locks in...
  5. OEM Issues
    Hello Nation, This is my second discussion on this forum and i need help regarding this code, i have had it for a while and i'm trying to figure out that's triggering it, my truck is a 2004 Trailblazer LT and here's what i did so far: *I have cleaned the throttle body and replaced the seal...
  6. Exterior
    I have 16" stock wheels on my 2004 trailblazer LS, I'm currently looking for something like the picture I've attached below. I've had no luck finding anything like these, I know wheels for the trailblazer are a little hard to come by but if there's anybody out there that could help me find a set...
  7. General
    Hello, I'm sorry if this has already been asked, but after some searching I can't find any threads that match. I just bought an 04 TB EXT LT 6cyl and it came with 1 key and 1 fob, so I went and bought 2 more keys and they work great. But I also bought another fob and it programmed to the car...
  8. General
    I have an 03 trailblazer LT swb 3.73s with 188k on the clock with the 4.2 vortec, at highway speeds of 75 mph and sometimes 80mph I can achieve 19-21mpg (hand calculated), was wondering what you guys were getting out of your TBs, mine is pretty much fully loaded. The mileage was made on a trip...
  9. OEM Issues
    Last Friday, I was driving home from work when my 04 Trailblazer threw a check engine light and started misfiring, I figured I just needed to replace my spark plugs which I planned on doing over the weekend anyways. It progressively got worse as I was on my way home. Next day after work I was...
  10. General
    Okay, female here :) Hubby bought a 2004 trailblazer LS from a dealer the other day and when we got it home that night and were playing with it and all that we realized that while our highbeams come on, when flicking the Auto/Manual lowbeam switch all that comes on are the little yellow lights...
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