
At Eyre Heavy Duty, our technicians specialize in electrical troubleshooting for heavy-duty trucks, medium-duty vehicles, buses, RVs, and commercial fleets across Maryland. From starting and charging problems to advanced computer faults and wiring failures, we pinpoint the issue quickly and get your vehicle safely back on the road.

Modern commercial vehicles rely on complex electrical and electronic systems. A single failing sensor, loose ground, or shorted wire can create performance problems, warning lights, or complete vehicle shutdowns.
Using dealer-level diagnostic tools for major brands—including Freightliner, International, Peterbilt, Volvo, Kenworth, and Ford—our team identifies the true cause of electrical system failures and provides fast, effective repairs.
Electrical problems in trucks, RVs, and motorhomes can be unpredictable and costly if not diagnosed correctly. At Eyre Heavy Duty, our certified technicians provide fast, accurate electrical diagnostics and repairs for all major vehicle systems, helping prevent downtime and unnecessary part replacements. Using industry-leading diagnostic software, we access live data, fault codes, system histories, and vehicle communication networks to identify issues quickly and efficiently.
Our services include:


Our technicians provide electrical repairs as part of regular maintenance, emergency service needs, and full fleet troubleshooting programs.
We diagnose a wide range of electrical issues including battery drain, lighting failures, charging system problems, wiring faults, dashboard warning lights, and accessory power issues. Our diagnostic equipment helps pinpoint problems quickly so repairs are accurate and efficient.
We use advanced diagnostic scanners, circuit testing, and hands-on electrical tracing to locate the root cause of the issue — not just the symptom. This approach prevents repeat failures and ensures long-term reliability.
Yes — by identifying issues early, preventative inspections reduce the risk of emergency repairs, tow costs, and downtime. They also help maintain vehicle resale value by keeping electrical systems in top condition.
Yes — we troubleshoot electrical systems on trucks, commercial vehicles, and RVs, including motorhomes. From complex wiring issues to generator and auxiliary power systems, we’re equipped to handle large-vehicle electrical repairs that many general shops can’t service.
Preventative electrical inspections catch small issues before they become costly problems. By regularly checking batteries, wiring, fuses, lights, and charging systems, we help prevent breakdowns, extend the life of your electrical components, and keep your vehicle safe on the road.
13600 Triadelphia Rd., Glenelg, MD 21737
We proudly service trucks across Maryland including Baltimore, Annapolis, Frederick, Columbia, Silver Spring, and surrounding areas, as well as Washington D.C. For reliable truck repair and maintenance, choose Eyre Heavy Duty.