Electrical problems can be complex and difficult to diagnose without the right tools. Our certified technicians use advanced diagnostic equipment to pinpoint faults in your truck's electrical system quickly and accurately.
Why the Electrical System Matters
Your semi truck’s electrical system powers starting, lighting, sensors, charging, and control modules. A small fault can cause no-starts, dead batteries, or intermittent warnings that are hard to trace without proper tools.
Common Electrical Problems
Battery and charging issues, alternator failure, bad connections, blown fuses, wiring damage, and ECM-related faults are common after years of vibration and weather exposure.
Signs You Need Electrical Repair
Hard starting, dim lights, dead batteries, warning lights, dead accessories, or erratic gauges mean you should schedule diagnostics soon.
Our Electrical Services
We test batteries and charging, trace wiring, repair lighting, service starters and alternators, and use scans to support ECM-related diagnoses—mobile service is available 24/7 for many issues.
Why Choose KM Truck & Trailer
Experienced heavy-duty electrical techs, modern test equipment, and emergency availability when you are down on the road.
From simple lighting repairs to complex ECM reprogramming, we handle the full spectrum of electrical issues on all major truck brands. Our mobile units carry the necessary equipment to perform most repairs roadside.
What's Included
Why Choose KM Truck & Trailer?
Trusted & Professional
Experienced technicians delivering reliable repairs you can count on.
Flexible Payment
Convenient payment choices designed to fit your budget.
Satisfaction Guarantee
Quality service backed by our commitment to customer satisfaction.
Friendly Support
A helpful team ready to assist you every step of the way.
Frequently Asked Questions
Trusted by Truck Drivers Across SC
Based on 100+ verified Google reviews
"They are so amazing people, well spoken, on time and quick like ambulance. Fair price. They took 37 minutes to fix my brake leaks on my semi truck."
"I've been in trucking business for 9 years. I've never been to any shop like this. They're honest, fast, the price is very reasonable. Highly recommend!"
"This is the best diesel repair shop in South Carolina on I-77 and I-26 area. They are very truthful and very honest people. Highly recommend."