Offroad Trailblazers and Envoys

Where have you driven your Trailblazer?

offroadTB.com 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!
Visit the Forums
  • Welcome to our new and improved homepage! Please contact us if you notice any bugs!
  • At ORTB, we work hard to provide the best offroad GMT360/70 content available
  • Head on over to the forums to find even more info and see the ORTB community in action!
  • New members are always welcome! Check out the forums for more info!
› ‹
News

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.

Fabrication

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

Electrical / Communication

Batteries, wires, antennas, and buttons.

Recovery

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

Utilities & Resources

Calculators, technical documents, and general resources.

Camping

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

Troubleshooting

This section helps you find and resolve common problems.

Latest Forum Posts

RockAuto • RockAuto Wants To Help With Your Upcoming Car Show

RockAuto would love to work with your upcoming car show, cruise-in, swap meet, etc. by providing promotional items to use in your goody bags or regist [Go To Post]

Suggestions / News / Rules / Questions • 3 Inch lift

hello all I'm looking to get bigger tires on my trailblazer and I'm getting a 3 inch suspension lift. I was just wondering if anyone would h [Go To Post]

Differentials / Axles • Re: 4.56 gears and ABS

Hello everybody. Its been a looooooooooong time since I have contributed anything here (due to life circumstances). But I'm glad to say that my r [Go To Post]