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

First back country outing this year, as the snow starts to melt in the mountains.Statistics: Posted by BC backroader — Mon Mar 19, 2018 11:54 am [Go To Post]

The title says it all, new never opened vent visors. Standard shade color. Not sure how much shipping would be, if you are close enough We can meet. $ [Go To Post]

My first "overlanding" trip to be conducted in October 2018.Will camp every night, no hotels, limited restaurants. Will try to cram all this [Go To Post]