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  1. 225k Rear Differential Problems! Any help is appreciated!!

    OEM Issues
    Hi Guys! Its been a while since I have been on the forum but I am always surprised at how many great articles people post and the random things you find. Keep it up! So sadly the trailblazers rear differential broke last night :worried: I do not have a exact diagnosis yet but I am assuming...
  2. Another G80 Question

    4x4 Drivetrain
    I know that the G80 has been covered ad nauseum here, but I cannot find the answer to my specific questions. I do NOT have a G80 in my trailblazer, but I want to have one added in. I went to the dealership and they told me that I needed the G80 AND a different carrier. Both about $600 plus...
  3. G80 Yeahh

    G80 Yeahh

    G80! G80! G80! YEAH YEAH YEAH! Locking Rear Differential. For the win? Yes. The salesman who was with me on my first test drive couldn't find the code. Well guess what, I DID!
  4. Looking for some help installing a G80 (St. Louis)

    4x4 Drivetrain
    So I think I managed to get hold of a G80 for my TB I've got the GT4 (3.73) gears in the back, and I'm wanted to keep the gears and install the G80, I know it's possible as many here have done so. The only problem is most of the shops around here are charging more than I can afford and I'd like...
  5. G80 Pinion seal leaking and whirring.

    4x4 Drivetrain
    02 Envoy with 114k on the clock is pushing fluid out the pinion seal. It also has a werring or wine sound after it gets warmed up kind of difficult to locate exactly where it comes from. I changed the fluid with standard issue GM lube and its probably due for a change. I need to check the...
  6. Question about adding G80

    Transmission Mods
    Can you install a G80 locker in a rear differential that doesn't have one without getting a whole new rear end? I'm a bit of a noob when it comes to the actual mechanics of it...
  7. G80 Option

    4x4 Drivetrain
    I posted this in another thread but I think now it was in the wrong place. I am learning a lot from the site, so thanks in advance for all the knowledge bestowed. :tiphat I understand I have the G80 Dif option. I basically understand how it works from the posts on Utube. But how do I get...