Mobile Diesel Repair & Fleet Service

UPTIME DONE RIGHT.

Reliable, fast, and expert mobile diesel and truck repair operating out of Strasburg to service the Denver metro area and beyond. Keep your fleet or unit performing at its best. From routine preventative maintenance and DOT inspections to check engine diagnostics and repairs, including engine, transmission, suspension, and electrical work, Harmon Diesel delivers dependable, high-quality service you can rely on.

Contact To Book

Working Hours

Services

Reliable, on-site diesel services tailored to keep your trucks and fleet on the road.

Fleet Maintenance Services

Proactive maintenance programs designed to keep your fleet reliable, compliant, and operating at peak performance.

Brake Repair

Thorough brake inspections and repairs to ensure safe, responsive stopping power.

Suspension Repairs

Reliable suspension repairs to improve ride quality, handling, and overall vehicle stability.

Check Engine Light Diagnostics

Accurate diagnostics to quickly identify and resolve check engine issues, minimizing downtime.

Engine Repair

Minor to moderate engine repairs to restore performance and help prevent costly breakdowns.

DOT Inspections

Comprehensive DOT inspections to ensure your vehicles meet all safety and compliance standards.

Electrical Repair

Electrical diagnostics & repair. Services include batteries, starters, alternators, and minor repairs.

roadside service

Breakdown service and emergency repairs. This includes charging system repairs, jump starts, minor air system repairs, and check engine light diagnostics.

cooling system service

Comprehensive cooling system services for semi trucks to prevent overheating and costly downtime.

Service Area

Proudly serving Denver Metro and surrounding areas.

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