Expert Diesel Truck Service for Work and Everyday Driving

Red McCombs Ford is your destination for professional diesel repair in San Antonio, TX. Whether you rely on your truck for work, manage a commercial fleet, or want dependable diesel performance, our service center has the equipment, experience, and expertise to keep your vehicle running at its best. As the largest service center in San Antonio, we proudly serve diesel owners with master certified technicians, advanced diagnostic equipment, Commercial discount pricing, and next-bay availability for fleet customers to help minimize downtime. Schedule your diesel service online today and let our team get your truck back on the road.

Schedule Your Diesel Service Online

Keeping your diesel truck operating at peak performance starts with routine maintenance and prompt repairs. Our online scheduling tool makes it easy to request an appointment that fits your schedule.

When you schedule service with Red McCombs Ford, you can:

• Request your preferred appointment time
• Describe your diesel concerns
• Review recommended maintenance
• Prepare for your visit

Whether you drive a hardworking pickup or manage multiple commercial vehicles, our service team is ready to help.

Diesel Repair by Experienced Professionals

Diesel engines are more complex than traditional gasoline engines and require specialized training, diagnostic equipment, and repair procedures. At Red McCombs Ford, our master-certified technicians use advanced diagnostic software and years of diesel experience to accurately identify engine, fuel system, turbocharger, and emissions issues before recommending repairs.

Whether your truck is experiencing hard starts, excessive exhaust smoke, reduced power, warning lights, rough performance, or unusual engine noises, our team is equipped to pinpoint the cause and restore dependable performance without unnecessary guesswork.

Comprehensive Diesel Repair Services

Our diesel service department works on a variety of diesel-powered trucks and commercial vehicles. Whether you rely on your truck for business, towing, agriculture, construction, or recreation, our technicians have the experience to keep it operating at its best.

Our diesel repair services include:

• Engine diagnostics
• Fuel injection system repairs
• Glow plug replacement
• Cylinder head repairs
• Turbocharger replacement
• Intercooler repairs
• Diesel particulate filter service
• Exhaust gas recirculation system repairs
• Diesel exhaust fluid system diagnostics
• Cooling system service
• Fuel filter replacement
• Heavy-duty oil changes

No matter the repair, our technicians use advanced diagnostic procedures to help ensure the job is completed correctly.

Powertrains We Service

Our experienced diesel technicians work with many of today's most popular heavy-duty diesel engines.

We routinely service engines including:

• Ford Power Stroke®
• Cummins
• Duramax
• Caterpillar
• Detroit Diesel

Whether your truck is used for towing, construction, agriculture, deliveries, or commercial transportation, our technicians have the experience to diagnose and repair a wide range of diesel powertrains.

Diesel Diagnostics You Can Trust

Modern diesel engines rely on sophisticated electronic controls and emissions systems. Identifying the root cause of a problem often requires specialized software and factory-level diagnostic equipment.

Our diesel diagnostic process can help identify issues involving:

• Fuel delivery
• Turbocharger performance
• Emissions systems
• Cooling systems
• Electrical components
• Engine performance

Instead of replacing parts through trial and error, we focus on accurate diagnostics that help reduce unnecessary repairs and return your truck to service as efficiently as possible.

Commercial Fleet Diesel Services

Businesses depend on reliable trucks to keep operations moving. Downtime affects productivity, scheduling, and operating costs, which is why Red McCombs Ford offers dedicated fleet support.

Our commercial fleet services include:

• Preventative maintenance scheduling
• Fleet inspections
• Diesel diagnostics
• Priority repairs
• Commercial discount pricing

We also provide next-bay availability for fleet customers whenever possible to help reduce downtime and get your vehicles back on the road faster.

Whether you operate delivery vans, service trucks, work pickups, dual rear wheel trucks, or medium-duty commercial vehicles, our fleet service team is prepared to support your business.

Equipped for Heavy-Duty Diesel Repairs

Diesel trucks often require equipment that many independent repair shops simply do not have. As the largest service center in San Antonio, Red McCombs Ford is equipped to service everything from personal diesel pickups to commercial work trucks.

Our facility includes:

• Heavy-duty vehicle lifts
• Oversized service bays
• Specialized diesel diagnostic software
• Modern repair equipment
• Factory-recommended service tools

This equipment allows our technicians to safely inspect, diagnose, and repair larger diesel vehicles while helping reduce turnaround time for both individual owners and commercial fleet customers.

Genuine Parts for Lasting Performance

Diesel engines operate under demanding conditions, especially when towing heavy loads or supporting commercial operations. That's why quality replacement parts play an important role in long-term reliability.

Our technicians use genuine Ford parts whenever appropriate, along with premium heavy-duty replacement components engineered to withstand high torque, demanding workloads, and everyday driving. Choosing quality parts helps support dependable performance while reducing unnecessary wear on critical engine systems.

Complimentary Multi-Point Inspection

Routine maintenance provides an excellent opportunity to identify developing problems before they become major repairs. Ask about receiving a complimentary multi-point inspection with your diesel fuel filter service. During your visit, our technicians inspect key vehicle systems to help identify maintenance needs and keep your truck performing at its best.

You can also check our service specials page throughout the year for additional maintenance offers and service opportunities.

Ask a Diesel Technician

Not every diesel concern requires immediate repairs, but unusual symptoms should never be ignored. If you're unsure what's causing your truck's performance issues, our service team can help point you in the right direction before your appointment.

When scheduling service, let us know if you're experiencing:

• Hard starts when cold
• Excessive black smoke
• Reduced power
• Turbocharger noise
• DEF system warnings
• Check engine light concerns

The more information you provide, the better prepared our technicians will be when your vehicle arrives.

Why Choose Red McCombs Ford for Diesel Repair?

From routine maintenance to advanced engine diagnostics, Red McCombs Ford provides diesel repair services designed for hardworking trucks and commercial vehicles throughout San Antonio. Our master-certified technicians, commercial discount pricing, Next-bay availability for fleet customers, and status as the largest service center in San Antonio allow us to deliver dependable service while helping to reduce downtime for both individual owners and local businesses.

Whether you need diesel engine diagnostics, turbocharger repairs, fuel system service, emissions repairs, or preventative maintenance, our team is ready to help. Schedule your diesel service online, review our current service specials, or contact Red McCombs Ford to keep your diesel truck performing at its best.

*Disclaimer: This content was drafted with AI assistance for initial drafting, reviewed by a subject-matter expert for accuracy, and edited by our team of writers and editors.