Certified Diesel Mechanic Atlanta, GA

AFS Diesel Truck & Body

At AFS Diesel Truck & Body, we pride ourselves on being the go-to choice for your diesel engine needs in Atlanta, GA. With over four decades of experience, we offer a comprehensive range of services tailored to the needs of heavy-duty diesel engines. From diagnostics to complete rebuilds, we ensure every job is handled with precision and expertise.


How Our Team Services Heavy Duty Diesel Engines


Our team is equipped to service all major components of diesel engines, thanks to our in-house machine shop, which is the largest in Atlanta, GA and the Southeast. This allows us to rebuild engines, cylinder heads, fuel injection systems, and more under one roof, ensuring quality control and faster turnaround times. Our certified diesel mechanics utilize advanced diagnostic tools to identify problems accurately, creating a repair plan that minimizes downtime for our clients. We also provide 24/7 mobile service, ensuring that even on-the-road issues can be resolved efficiently with a certified diesel mechanic Atlanta, GA drivers can depend on.


The process begins with a thorough diagnostic evaluation, where our skilled technicians use state-of-the-art equipment to pinpoint engine problems. After diagnosing the issue, we proceed with repairs or maintenance tailored to the engine's specific requirements, adhering to manufacturer guidelines and industry best practices. For major repairs or rebuilds, we utilize our extensive in-house capabilities to deliver reliable and long-lasting solutions.


Choosing a certified diesel mechanic in Atlanta, GA, is essential to maintaining the performance and longevity of your diesel engine. Certification ensures that mechanics have the specialized training and expertise required to handle the complexities of modern diesel systems. At AFS Diesel Truck & Body, our certification reflects our commitment to excellence and our ability to tackle the toughest challenges in diesel engine repair.

Frequently Asked Questions

  • What makes AFS Diesel Truck & Body different from other diesel repair shops?

    AFS Diesel Truck & Body stands apart with our in-house machine shop—the largest in the Southeast—allowing us to rebuild engines, fuel systems, and major components under one roof. Every certified diesel mechanic in Atlanta, GA on our team is trained to handle complex diesel engine repairs quickly and efficiently, ensuring high-quality work and faster turnaround times. Customers also value our transparent communication, detailed estimates, and ability to keep fleets and trucks running reliably across Atlanta and the surrounding areas.

  • Do you offer mobile diesel repair services in the Atlanta area?

    Yes, we provide 24/7 mobile repair services throughout Atlanta and nearby regions. A certified diesel mechanic in Atlanta, GA can be dispatched directly to your location, whether you experience a breakdown on the highway or an urgent issue at your work site. Our mobile units are fully equipped to perform diagnostics and repairs on-site, minimizing downtime and keeping your vehicles operational.

  • What types of diesel engines do you service?

    Our technicians service all major heavy-duty diesel engine makes and models, including Caterpillar, Cummins, Detroit Diesel, and others. Each certified diesel mechanic in Atlanta, GA is skilled in both diagnostics and complete rebuilds for engines used in trucks, buses, and heavy equipment. We stay up to date with the latest engine technologies to ensure accurate repairs for both older and modern diesel systems.

  • How do you diagnose diesel engine problems?

    We use advanced diagnostic equipment to pinpoint mechanical or electronic issues before any work begins. A certified diesel mechanic in Atlanta, GA evaluates each engine thoroughly to create a precise repair plan. This method reduces unnecessary parts replacement, saves time and money, and ensures your vehicle is repaired efficiently while restoring peak performance.

  • Can AFS handle complete diesel engine rebuilds?

    Absolutely. Our in-house machine shop allows us to rebuild engines, cylinder heads, and fuel injection systems to factory standards. When a certified diesel mechanic in Atlanta, GA performs the work, you can trust that the rebuild will be precise and long-lasting. Every rebuild undergoes rigorous testing and quality checks to ensure your engine delivers reliable power for years to come.

  • Do you work with fleet operators or only individual truck owners?

    We serve both individual drivers and commercial fleets across Atlanta and surrounding areas. A certified diesel mechanic in Atlanta, GA can maintain entire fleets efficiently, helping businesses reduce operating costs and prevent breakdowns. Our flexible scheduling and preventive maintenance programs make it easy for fleet managers to keep vehicles on the road with minimal disruption.

  • How long does a typical diesel engine repair take?

    Repair time depends on the complexity of the issue, but our in-house capabilities allow for faster service than most competitors. A certified diesel mechanic in Atlanta, GA coordinates directly with our machine shop team to streamline the repair process. Because we perform machining and rebuild work internally, turnaround times are often days faster than shops that must outsource key components.

  • What are the benefits of choosing a certified diesel mechanic?

    Certification ensures that technicians meet strict training and safety standards for heavy-duty diesel systems. By choosing a certified diesel mechanic in Atlanta, GA, you’re working with professionals who understand the technology, performance, and compliance needs of modern engines. This expertise protects your investment, extends engine life, and keeps your vehicle performing efficiently.

  • Do you offer preventive maintenance for diesel trucks?

    Yes, our preventive maintenance programs include oil analysis, filter replacement, injector cleaning, and performance inspections. A certified diesel mechanic in Atlanta, GA tailors services to your engine’s mileage, condition, and manufacturer requirements. Regular maintenance helps prevent costly repairs, improves fuel efficiency, and reduces the risk of unexpected downtime, keeping your trucks reliable for daily operations.

Contact Us to Get Started


Experience the difference a certified diesel mechanic in Atlanta, GA can make. Visit us at our Conley location or contact AFS Diesel Truck & Body today to learn more about our services and how we can support your diesel engine needs.