Offroad Trailblazers and Envoys

Where have you driven your Trailblazer? has the information you need to modify your GMT360/70
for exploration and discovery of the unpaved areas in the world.

Check out our Articles below and join the forum!
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View the latest news posts and updates from ORTB.

Lifts / Suspension

Vehicle suspension maintenance information and lifting articles.

Wheels / Tires

Relating to everything wheels and tires.

Differentials / Axles

Look in here for information about drivelines and gearing.


Components built by members, and tips for your own fabrication.

Electrical / Communication

Batteries, wires, antennas, and buttons.


Stuck? We've got info to help you get out safely.

Utilities & Resources

Calculators, technical documents, and general resources.


Want to spend some time outside? You'll find info about that right here.


This section helps you find and resolve common problems.

Latest Forum Posts

Plasti dipped wheels. May wind up painting or powdercoat them come spring. Gonna be ordering front suspension stuff soon to hoard till spring when it [Go To Post]

They just brought up your part out on the FB group as well trying to get shitStatistics: Posted by HARDTRAILZ — Thu Nov 07, 2019 12:10 pm [Go To Post]

WOW. I have done several lift kits on JK and at least one the recommend is a HELL NO do not use kit and the rest are budget boost, not anything you re [Go To Post]