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

Nothing to exciting but gave her a good wash. Threw some tire shine on and cleaned all the windows. Not bad for 13 yrs old its still a 10 footer but i [Go To Post]

06denaliman wrote:But yes pic before and with what u run now would be great. Im def leaning towards not 3” i really think a 2” will give me what i nee [Go To Post]

I have a Trailblazer.Statistics: Posted by Flyingfischer5 — Wed Apr 17, 2019 10:33 pm [Go To Post]