Michael Nielsen

Publisher of HeavyDutyJournal.com, brings 15+ years of hands-on diesel repair and shop operations experience, helping ensure the publication delivers practical, field-tested solutions for heavy-duty industry professionals.

Diesel technician diagnosing an automated manual transmission on a heavy-duty truck using a laptop diagnostic tool in a repair shop

Automated Manual Transmission Maintenance: Complete Fleet Guide

By Michael Nielsen, Publisher | 15+ Years in Diesel Repair Last Updated: September 2026 ⏱ Estimated reading time: 19 minutes Automated manual transmission maintenance has become one of the most consequential skill sets in the modern fleet shop. AMTs now account for upward of 80 percent of Class 8 truck sales in the North American

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