Semi-Truck Power Distribution Module / Fuse Box Repair | UpFix

Why Does My Truck Keep Losing Power or Blowing Fuses?

The Power Distribution Module (PDM), sometimes called the fuse box or power block, distributes voltage from the battery to all major systems. Over time, heat, corrosion, or vibration can damage connectors and solder joints.

When a PDM fails, power drops out intermittently or certain systems lose voltage completely, leading to random shutdowns or recurring fuse failures.

Common Symptoms

• Truck loses electrical power at random

• Certain lights or accessories stop working

• Fuses blow frequently

• Visible burn marks or melted connectors

Why Repair Over Replacement

Replacement power modules can be costly and may not match your truck’s configuration. UpFix repairs your existing module, replacing corroded terminals and resoldering cracked joints.

Repair Process

1. Inspect for heat damage and corrosion

2. Replace high-resistance terminals

3. Rebuild power and ground distribution circuits

4. Perform full electrical load testing

Supported Brands

Freightliner, Kenworth, Peterbilt, Volvo, International and others.

Get your truck back on the road and keep your costs low.
Send your part to UpFix for professional testing and repair.
We’ll restore it to like-new condition, save you up to 80% compared to buying new, and make it plug-and-play ready when returned.