Don’t Pay for a Tow. We Bring the Shop to Your Truck.

Expert Mobile Electrical & Diagnostic Repair for Big Rigs, Trailers, and Heavy Duty Fleets in Upper Marlboro.

Call For Emergency

Dealer-level diagnostics at a fraction of the price. No waiting weeks for a bay.

Dealers charge $500+ just to hook up a laptop and make you wait days.

Our Services

Explore our comprehensive range of professional services today.

Electrical Specialist

Battery drains, alternator failure, short circuits, and lighting issues.

Advanced Diagnostics

Check engine lights, forced regens (DPF), and sensor faults using dealer-grade software.

Trailer Repair

ABS faults, 7-way plug repair, liftgate electrical, and lighting compliance.

Start & Charge

High-output alternator replacements and starter motors done on-site.

Aftertreatment Hardware

NOx sensor replacement, DEF line heater circuit repair, and SCR wiring harness reconstruction.

APU & Inverters

Repair and replacement of mufflers, catalytic converters, and exhaust pipes.

Dump & Tarp Systems

PTO switch wiring, electric tarp motor replacement, and hydraulic pump solenoids for dump trucks.

HVAC Electrical

Blower motor resistors, AC compressor clutch wiring, and climate control panel troubleshooting.

Data & Communication

J1939 CAN bus line repair, datalink connector replacement, and dashboard gauge cluster electrical.

Heavy Duty Electric

Mobile Heavy Duty Electric Mechanic Services

"Saved me a tow bill!"
"I was stuck at the weigh station with a lighting issue. Milton came out within the hour, fixed the short in my trailer plug, and got me back on the road. Dealers wanted me to wait 3 days. Highly recommend for any owner-operator in Maryland."

Carlos M.

"Excelente servicio y precio justo."
"Es difícil encontrar mecánicos honestos que entiendan bien el sistema eléctrico de los camiones grandes. Milton solucionó un problema de sensores que otros no pudieron encontrar. Buen precio y habla español. Gracias!"

Jorge L.

"Dealer-level diagnostics"
"We use Heavy Duty Electric for our fleet's forced regens and computer diagnostics now. He comes to our yard, which saves us downtime. Professional, fast, and knows his stuff, and the best part not having to pay the dealer-level diagnostics prices"

Mike T.

Frequently Asked Questions

Do I need to tow my truck to a shop?

No. We are a 100% mobile service. We come to your location—whether you are roadside, at a weigh station, or in a parking lot—to perform diagnostics and repairs on-site.

What areas do you serve?

We are based in Upper Marlboro, MD (20772) and serve a 20-mile radius, covering Prince George's County and surrounding areas.

Can you perform forced regens and computer diagnostics?

Yes. We use dealer-level diagnostic software to read codes, perform forced DPF regens, reset sensors, and troubleshoot complex electrical issues on most major heavy-duty brands.

Do you work on trailers as well?

Absolutely. We specialize in trailer electrical systems, including ABS faults, 7-way plug repairs, lighting issues, and liftgate electrical repairs.

Hablan Español?

Yes, we specialize in servicing hybrid and electric vehicles to maintain tSí, ofrecemos servicio totalmente bilingüe. Si prefiere explicar el problema de su camión en español, estamos aquí para ayudarle.heir efficiency.