About Kls Diesel Services

KLS Diesel Services is Sioux City’s trusted local choice for dependable diesel repair, delivering both rapid on-scene support and thorough in-shop service for commercial trucks and trailers. We specialize in helping owner-operators and small fleets minimize downtime and stay on schedule with practical, efficient repair solutions. When an unexpected breakdown occurs, our 24-hour mobile mechanic team responds quickly with the tools, diagnostic equipment, and commonly needed parts to stabilize the situation and perform accurate on-site engine diagnostics. From brakes, hitches, and suspension components to load-bearing systems and complete semi-truck repair, we work efficiently to get drivers safely back on the road while maintaining compliance.

In addition to emergency roadside assistance, we provide scheduled diesel maintenance and comprehensive fleet maintenance programs designed around uptime and predictable operating costs. Our certified diesel mechanics handle mobile diesel repair, DOT inspection repair, trailer repair, and reefer repair to support refrigerated loads and complex trailer systems. With flexible service options that work around dispatch schedules and delivery windows, KLS Diesel Services is committed to keeping shipments moving and businesses running smoothly. Whether you need immediate roadside help or a long-term maintenance plan, our team is ready to deliver reliable service that keeps your rig rolling and your schedule on track.