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  1. 4x4 Drivetrain
    So I installed a 3 inch lift kit, I've only gotten the front done because of not having time but I was going to put the rear in this weekend. After installing the front lift, I tried to use my 4x4 in some snow and i noticed the front isn't engaging in neither 4 high or low. The switch itself...
  2. The 02-09 "How-To" and DIY Section
    So I have a 4x4 02 trailblazer so on my car my 4x4 stopped working a long time ago and saw this Awd transfer case from a trailblazer ss and I was wondering if anyone have information if it’ll work like would the car freak because the 4x4 computer not reading it right any information would help
  3. 4x4 Drivetrain
    My 2006 Chevy Trailblazer LT 4x4 is not shifting into 4L. It will shift into 4H without a hitch, as with 2wd and auto, but when I turn the dial to 4L, it blinks for ~30 secs before just defaulting back into whatever setting it was in before. Is there something wrong with the transfer case, or...
  4. The 02-09 "How-To" and DIY Section
    So the question is, when in/engaged 4HI what’s the max speed you can go???
  5. 4x4 Drivetrain
    I recently bought an envoy with a replaced rear differential and the front differential removed. I doubt the RPO doesn't match the differential in the rear. I wanted to remove the front differential from my old envoy but I don't know if the gear ratios are the same. On my new envoy, the...
  6. Exterior
    Hello, I bought a 04 GMC xuv with no experience before. (besides having the regular short 04 envoy with all the same specs like color, sle, 4x4, now sitting in the yard after its engine blew) After I replaced the corroded tailgate switch, it swang open just did not stay in place, just keeps on...
  7. General
    Hey guys, new member here. Looking for a reliable winter 4x4 that the wife and I can also use for camping and hauling our kayaks during the summer. I loved the TrailBlazer in the early 2000s, but I'm cautious to buy something 12-20 years old (really don't want to have to replace a transmission...
  8. 4x4 Drivetrain
    I am looking to straight swap out the 3.42 to a 4.10 differential on my 2005 TBZ LS.. my question is what else do i need besides the front and rear differential from the 4.10?
  9. Classifieds
    '02 Trailblazer LTZ for sale for parts vehicle. Motor runs great and has a lot of new stuff installed on the truck (have all reciepts). Body is in great shape but the frame is a rust pile. The power steering hoses rusted through and can't be replaced due to the frame. Selling for $1500. Also...
  10. 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...
  11. 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).
  12. 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...
  13. 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...
  14. 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...
  15. 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...
  16. 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...
  17. 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...
  18. 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...
  19. 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...
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