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4x4

  1. *thunking* sound in reverse, 4wd hi

    4x4 Drivetrain
    I recently bought a used 2005 trailblazer and when in 4 wheel drive and reversing with the wheels turned more than half way, there is a loud thunking sounds (I don't know how else to say it).
  2. My amateur build

    My amateur build

    This is my amateur build, money is tight obviously lol, new master craft courser axt2, painted rims, TAC bull bar, ROLA roof rack, 4.2l I6 with a K&N performance air intake. Typical high schooler setup. I plan on adding alot more once I get more money, I plan on adding a stiffer suspension since...
  3. Transmission shifting hard all of a sudden

    OEM Issues
    Hey guys, was camping over 4th of July weekend. 2003 Trailblazer LTZ 4.2l 4x4 On the way back into town, only about 20 miles from home, I noticed that while in overdrive, my RPM kept bouncing between 2000-2200 while cruising at 55. So I kicked it into third and it was fine. Then, coming back...
  4. Binding and cutting out in AWD.....and other issues

    4x4 Drivetrain
    First, thanks for reading my first post here and for any help you might be able to give. I went through the "Please read me first before making a post" in the 4x4 section. I've got a '03 TB EXT with the I6 engine and 230,000 miles. My service 4wd comes on when I'm in AWD and I turn, notice a...
  5. Whiny noise from front differential

    The "How-To" and DIY Section
    2007 Envoy SLT 4x4 The video below shows exactly what is going on with my Envoy. I have checked the parts diagram and there is a bearing on the left side of the differential where the CV shaft inserts into. Issue: Whiny/grinding noise like a bearing has gone out. Put both front wheels up off...
  6. 2003 4.2l 4x4 automatic shifter moves gear doesnt

    OEM Issues
    Drove perfect until I parked yesterday. This morning the shifter will move but it feels like an elastic is pulling it back towards park (easy until about D). Gear indicator doesn't show any movement off park and the tranny never engages. No codes using a CANODB2 reader. I'm thinking maybe a...
  7. Straight Axle Swapping A RWD

    Off-Road
    Hi everyone, Please keep in mind i am a total novice when it comes to modding for offroading, so I'm sorry if i explain something wrong. I have a RWD 07 Trailblazer with the 4.2. I love offroading and I want an unapologetically large straight axle swapped beast. I know i'd be cheaper to sell my...
  8. 4X4 doesn't work, I've tried everything!!!!

    4x4 Drivetrain
    Hi, I have a 2003 Trailblazer LS. 4.2 I6. 112k miles. I have the service 4wd light on, the check engine soon light on, ABS and brake and air bag lights also on. No cruise control working, and no 4x4, no lights on the selector switch except at start up when it performs a bulb check. I have...
  9. 2006 Chevy Trailblazer engine swap

    Engine Tunes/Mods
    I am new to posting on this forum, but I was looking to see if anyone else has ever swapped a 2006 4.2 Trailblazer motor with a 2007 4.2 Trailblazer motor? I have seen throughout the internet, where other people have swapped them without any difficulties. I just wanted to make sure that I...
  10. Beating a dead horse 4x4 conversion

    4x4 Drivetrain
    i bought my 06 trailblazer for 3k with 40k miles on it.... it was a steal it kinda just fell into my lap. it is however only 2wd. I just did the math on what i would need for a 4wd conversion transfer case with shift motor front diff two cv axles and two new drive shafts is only 239 at my...
  11. New to TrailVoy

    Introductions
    Hello, I just wanted to introduce myself. This site has a lot of great information on it! I enjoy reading through the threads and learning a lot about my vehicle. I've just recently purchased a trailblazer for the first time and love it. It's a 2003 LT 4x4 model. Any helpful information that...
  12. 4x4 and blower ?

    General
    my 4x4 light is on i have not taken it to the dealer for the cost, but i had a guy tell me that there is a wire to deal with the 4x4 and the blower motor and thats why mine only works on high and my 4x4 does not work. is there truth to this or is that guy a total idiot like i believe him to...
  13. 4x4 Not Working

    4x4 Drivetrain
    I have a 2004 Gmc Envoy SLE and the 4x4 isn't working. I have no service 4x4 light on. Everything seems to work fine but the front tires won't spin. It snowed a couple of days ago here and i tried going up a hill and I coulnt. The front tires just won't work. I switch into a4wd or 4hi or 4low...
  14. Leaking front diff solution

    4x4 Drivetrain
    Any opinions on using red grease in the front differential on an '02 TB? The theory is the thicker grease won't leak out as profusely as the standard gear oil. I've used the lucas gear oil with good results, but it still leaks especially when it gets hot in 4wd driving in the snow.
  15. New member from the United Arab Emirates

    Introductions
    Hello everyone! I bought our 07 TB I6 LTZ recently as an all-round use SUV for my wife, but had been driving it for over 12 months before, so know it well. It just brought us back from a fab road-trip (1800 km's) from Ras Al Khaimah (UAE) to Oman & through the Wahiba sands, up the coast to...
  16. 4WD Service light on & no 4 wheel drive

    4x4 Drivetrain
    I see that this is a much talked about topic: 4WD Service light on I have a 2003 4.2L v6 trailblazer. When I switch 4 wheel drive switch to anything other than 2Hi the 4WD Service light comes on. I can also tell that the 4 wheel drive isn't engaged from how it feels when I turn the car in...
  17. AWD and 4hi and 4low Light blink than service light appears

    4x4 Drivetrain
    Im new to owning a 4wd vehicle. So I don't know exactly everything about the whole system. But, like the title said. Ill put it in neutral and try to switch it into 4wd(it goes for all posistions) and I hear it engage, but the 2wd still stays on and 4wd is still flashing but the service light...
  18. 4x4 selector switch have no lights, no front tire engagement

    4x4 Drivetrain
    Great site! Anyway I have read through all the forums and can't quite get the answer I'm looking for. I have a 2006 trailblazer with the 4x4 service light on and no lights on the selector switch (they light up on start up so they work) and of course no 4 wheel drive. I turn the selector switch...
  19. 4x4 issues.... ideas?

    4x4 Drivetrain
    Hi all, I have a 2003 trailblazer ext with 4.10 gearing. I got this with 84k and now have 137k. They told me all maintenance on this thing was done and I haven't changed fluid in tc yet. I was gonna as soon as warmer weather comes.... I have been using my 4x4 a lot with winter hitting full...
  20. A4W does not work!

    4x4 Drivetrain
    When switching from 2W drive to A4W the light does not change or blink, the 4W drive works fine and engages perfectly, even the 2W drive works. Any ideas as to what the problem is, or could be?
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