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.

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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

Electrical / Radios • Re: GM Wiring diagrams!

Blazentpi wrote:Pin outs for a 2004 trailblazer with 5.3l at the body control module and engine harness connections if possible. Thank youCheck over o [Go To Post]

Electrical / Radios • Re: GM Wiring diagrams!

Pin outs for a 2004 trailblazer with 5.3l at the body control module and engine harness connections if possible. Thank youStatistics: Posted by Blazen [Go To Post]

Electrical / Radios • Re: Anybody know what this connector name is ?

I’m now having trouble finding a pinout for it. I can only find the pinout for a 2006 which has a lot more and differences than a 2004. Any body have [Go To Post]