230 NY-109, Farmingdale, NY 11735
Reliable Mack Truck Repair Since 1991
Keep Your Mack Moving
Mack® trucks are built for strength, durability, and high-performance hauling—whether you’re running dump trucks, day cabs, or long-haul tractors. To keep your Mack performing at its best, routine maintenance and expert repairs are essential. At TLC Auto & Truck Repair Center, we provide comprehensive Mack repair and fleet services that keep your vehicles on the road and your business running smoothly.
Our ASE-certified technicians handle everything from oil changes and brake service to advanced engine diagnostics and after treatment repairs. Whether you manage a fleet or own a single Mack, you’ll get fast turnaround times, clear communication, and quality workmanship you can trust.
Mack Repair Specialists: Services We Offer
We offer a full range of services to keep your Mack in peak condition:
- DOT Inspections & Compliance Checks – Annual/FMCSA inspections with clear reports and repair plans.
- Fleet Management & PM Schedules – Custom preventive maintenance intervals based on mileage, hours, and duty cycle.
- Oil Changes & Full Fluid Service – Engine oil, coolant, transmission, differentials, power steering, and more.
- Diesel Engine Diagnostics & Repairs – OEM-level scan tools and test procedures for Mack MP engines (MP7/MP8), fuel systems, injectors, turbos, and cooling systems.
- Aftertreatment Service (DPF/DEF/SCR/EGR) – Regens, DPF cleaning/replacement, NOx sensor diagnostics, EGR system service, leak checks.
- Transmission, Clutch & Driveline – mDRIVE® and manual transmissions, clutches, U-joints, carrier bearings, and differential service.
- Brake Service & ABS – Pads, shoes, drums/rotors, air brake systems, chambers, valves, and ABS diagnostics.
- Suspension & Steering – Kingpins, bushings, shocks, leaf/air suspensions, alignment recommendations.
With proper maintenance, a Mack truck can log a million miles or more before requiring a major overhaul. Our team helps you reach that milestone with expert service and preventative maintenance plans.
Common Mack Repair Symptoms We Fix
If you’re experiencing any of the issues below on your Mack, we can diagnose and repair them quickly.
- Frequent regens or “DPF full” warnings
- Check engine light or engine derate
- Loss of power or poor fuel economy
- Hard start, no start, or rough idle
- Overheating or running too cool
- ABS light, soft brake pedal, or brake pull
- Vibration, clunking, or uneven tire wear
- A/C not cooling
Our fleet diesel repair service helps minimize downtime and keep your operations running smoothly. From vans to heavy-duty trucks, we track service intervals and performance for every unit to ensure dependable results.
