GUIDES · SPECS · FAULT CODES · SOURCED AND DATED

Garage: maintenance guides, specs and fault codes

Plain answers for the parts, service intervals and limits that keep a truck earning. Every guide here covers 26 ft box trucks and larger, from Class 8 tractors to medium-duty straight trucks, and every number names its source or says to check your OEM spec.

Start with truck maintenance for what a PM program covers, or semi truck repair for what an owner can check before the shop takes over. Spec references hold the torque values, tire sizes and dimensions you look up on the road. Fault code pages explain what an SPN and FMI pair points to and which causes to rule out first.

We are a dispatch service, not a repair shop. These guides help you plan service and ask the right questions. For safety-critical work, follow your service manual and use a qualified technician. Need the math? Our free tools turn intervals and costs into a schedule.

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