Truck Electrical Repair Services
Truck Electrical Repairs
Is your truck in need of major or minor electrical repair services? Perhaps you need to have electrical diagnostics run or a closer look at the critical components of your vehicles?
Electrical problems are the fastest way to kill your uptime. In a modern heavy-duty truck, you've got thousands of meters of wiring, up to 2.4 kilometres of wire, and one tiny break can shut down your entire operation. That's why electrical work is a difficult job for most shops. We don't just guess. The skilled technicians at Dieseltech perform a wide range of services, from electrical repairs to truck diagnostics, and have expertise in complex diagnostics and wiring repair.
Customer satisfaction and keeping your fleet in optimal condition are what we do best. Our team is trained in the electrical systems of commercial heavy-duty and diesel trucks. Whether you require roadside assistance or scheduled shop repairs, your electrical problems will become a non-issue with Dieseltech.
Truck Diagnostics & Electrical Repair Services
We handle the full range of heavy-duty truck electrical issues. Our focus is getting to the root cause fast, not throwing parts at the problem.
System Diagnostics and Wiring
Advanced Diagnostics: Full system checks and testing on all electrical connections and components to pinpoint faults accurately.
Wiring Repair: Expert troubleshooting, repair, and replacement for faulty wiring and shorted circuits—from simple breaks to complex harness issues.
Charging and Starting Systems
Alternators and Charging Systems: Thorough testing of charging systems, including alternator repair/replacement and battery replacement, to ensure reliable power.
Starter Motors: Repair or replacement of starter motors to eliminate hard starts and no-starts.
Power, Lighting, and Accessories
Lighting Systems: Repair and replacement of headlights, taillights, and interior cab lighting.
Accessory Power: Service for all auxiliary electrical components, including ELD/telematics wiring, liftgate charging circuits, or strobe/work light integration
Truck Electrical Diagnostics
You may not always know what the failure is at a glance. It's why we diagnose issues using advanced tools for almost all makes and models. Our electrical diagnostics help to identify faulty wiring, sensor malfunctions, alternator problems, and more. Our experienced technicians can quickly identify the root cause of the electrical problem, avoiding costly (or unnecessary) repairs.
Truck Electrical Diagnostics
We know that for safety purposes and optimal driving performance, our heavy-duty truck electrical repairs can extend the life of your vehicles. From lighting and starting & charging systems to starters and alternators, with our expertise, you can expect reduced maintenance costs and a safer, more reliable vehicle.
Mobile Truck Electric Repair
Available around the clock, our 24/7 mobile repair service addresses unexpected issues with your electrical system wherever they happen. With fully equipped repair trucks, we handle ECU/ECM troubleshooting, jump starts, wiring, lights, batteries and various emergency repairs.
Don't see your issue list? Call us directly with your electrical problems, and we will be able to do a systems check and offer a transparent breakdown of what service you may need.
Common Electrical Issues
Some of the most commonly known problems that come up with a vehicle’s electrical system are attributed to a dead battery or blown fuses. However, the electrical issues that stop a heavy truck are often more complex than just a dead battery. Downtime usually traces back to specific system failures. For example, there are corroded harnesses, CAN bus errors, and more.
Let’s dive into some specific failure points:
1. Charging and Starting System Failure
This goes beyond a simple dead battery. The problem is often upstream:
- Alternator Failure: A failing alternator means the battery isn't being recharged, leading to power loss and eventual shutdown.
- Starter Solenoid/Motor Issues: Corrosion or internal component failure causes hard starting, or a complete "no-crank" condition where the truck won't turn over.
- Wiring: The wires connecting your batteries to your starting and charging system are just as important as the components themselves. The connections and wiring has to be clean, secure, and free from corrosion.
2. Intermittent and Buried Wiring Faults
This is the real headache. Faults that are hard to replicate cost fleets time and money:
- Corroded Harnesses: Especially common near the chassis, frame, or engine compartment, where moisture and road salts damage wiring looms and connectors. This causes intermittent lights, gauges, or sensor faults.
- Sensor and ECU Communication Errors: Damage to the CAN bus or harness wiring causes data signal loss, leading to "ghost" check engine lights or intermittent power derates.
3. Blown Fuses and Component Shorts
While a blown fuse is the result, the cause is what matters. We find the source of the short:
- Accessory System Shorts: Often traced to power-hungry accessories, trailer lighting circuits, or auxiliary components causing repeated fuse failure.
- Component Malfunctions: A shorted-out component (like a faulty sensor, pump, or relay) is often pulling excessive current, repeatedly blowing the fuse until the defective part is identified and replaced.
We will be able to run diagnostics to see the real electrical issues and address them efficiently.
Our Truck Repair Shop
Dieseltech has been providing superior quality service, value and convenience to commercial truck clients for over a decade and a half. We’re one of the top companies that adheres to the highest standards of quality service in the commercial truck industry. Our experienced technicians are experts in various brands of commercial trucks and vehicles and remain dedicated to clients' needs.
We offer the following various fleet maintenance and truck repair services, including:
- 24-hour Mobile Truck Repair: We feature 9 mobile repair trucks that are fully equipped to handle virtually any issue you may encounter while on the road.
- Mobile Roadside Assistance Services: Battery jump-starts or boosting, not starting or out of fuel, tailgate and railgate repairs, coolant leaks, air system service and repairs,
- Merlo Telehandler Repairs: We have collaborated with Manulift and are now an authorized Service Center for Merlo telehandlers.
Dieseltech proudly services in and around Coquitlam, including Aldergrove, Abbotsford, Langley, Surrey, South Surrey, White Rock, Maple Ridge, Port Coquitlam, Delta, Richmond, Burnaby, New Westminster, Vancouver, North Vancouver, West Vancouver, and Squamish.