Looking for reliable diagnostics and electrical repair services for heavy-duty trucks? At Competition Truck Repair in Kernersville, NC, our technicians specialize in diagnosing and resolving electrical issues to keep your fleet running strong.

Our North Carolina Shop's Diagnostics and Electrical Repairs
We offer comprehensive diagnostics and electrical repair services tailored to the needs of heavy-duty trucks. Our technicians utilize advanced diagnostic equipment and techniques to identify and address electrical issues efficiently. Here are some of the services we provide:
Diagnostic Testing: We offer thorough diagnostic testing to pinpoint electrical problems in your truck's systems. Our state-of-the-art diagnostic tools allow us to accurately assess the condition of components such as sensors, wiring, and electronic control units.
Battery Testing and Replacement: We provide battery testing to ensure proper voltage and charging capacity. If your truck's battery is faulty or nearing the end of its lifespan, we offer reliable replacement services to restore electrical performance.
Alternator and Starter Repair: Our technicians are skilled in diagnosing and repairing alternator and starter issues. Whether it's a faulty alternator causing charging problems or a malfunctioning starter preventing your truck from starting, we have the expertise to get you back on the road.
Wiring Repairs and Harness Replacement: We offer wiring repairs and harness replacement services to address damaged or faulty wiring. Our meticulous attention to detail ensures proper electrical connections and minimizes the risk of future issues.
Why Kernersville Chooses Competition Truck Repair for Diagnostics & Electrical Repair
Modern heavy-duty trucks rely on advanced electronic systems to monitor engine performance, emissions, safety, and overall vehicle operation. Professional diagnostics & electrical repair helps identify problems quickly, reducing unnecessary parts replacement and minimizing downtime. Our technicians use professional diagnostic equipment to pinpoint faults and perform dependable repairs that restore reliable performance.
Here's what sets us apart:
- Comprehensive Diagnostics & Electrical Repair: We provide complete diagnostics & electrical repair, including engine diagnostics, electrical troubleshooting, battery testing, charging system repairs, starter replacement, alternator repairs, wiring repairs, sensor diagnostics, and lighting system repairs.
- Advanced Diagnostic Equipment: Our technicians use professional diagnostic tools to retrieve fault codes, analyze system data, and accurately identify the root cause of electrical and performance issues.
- Experienced Heavy-Duty Technicians: We have the knowledge and equipment to perform diagnostics & electrical repair on commercial trucks, vocational trucks, buses, and other heavy-duty diesel vehicles equipped with modern electronic systems.
- Honest Recommendations: After completing our diagnostics & electrical repair process, we explain our findings clearly and recommend dependable repairs based on your truck's actual condition.
- Reduced Downtime: Fast, accurate diagnostics & electrical repair helps eliminate guesswork, reduces unnecessary repairs, and gets your truck back on the road as efficiently as possible.
Reach Out Today!
Ready to schedule diagnostics or electrical repairs for your heavy-duty truck? Contact Competition Truck Repair today at 336-257-8124 to speak with one of our knowledgeable team members. Let us help keep your fleet operating reliably and safely on the road.
Areas We Serve
While our shop is located in Kernersville, we extend our repairs and services to a 100-mile radius of the shop. This includes the following locations in North Carolina: Charlotte, Raleigh, Greensboro, Durham, Winston-Salem, High Point, Cary, Chapel Hill, and more. For those in these areas, we offer expert mobile truck repairs, roadside assistance, and towing services.
FAQs
How Do I Get to Competition Truck Repair in Kernersville, NC?
Electrical problems don't have to keep your truck off the road for long. Visit Competition Truck Repair at 171 Fulp Rd, Kernersville, NC 27284, where drivers can reach our shop easily from I-40, Business I-40, and US-421 for professional diagnostics & electrical repair.
Our facility is near Piedmont Triad International Airport, Downtown Kernersville, and Salem Lake. Customers throughout the Triad trust Competition Truck Repair for diagnostics & electrical repair, engine diagnostics, electrical troubleshooting, charging system repairs, wiring repairs, sensor diagnostics, and complete heavy-duty truck services.
What does a truck diagnostic test entail?
A truck diagnostic test involves using specialized equipment to scan the vehicle's onboard computer systems for error codes and performance data. This helps identify potential issues with the engine, transmission, electrical systems, and more.
What are common electrical issues in trucks?
Common electrical issues in trucks include faulty batteries, alternator failures, starter problems, and wiring harness issues. These issues can lead to starting problems, charging system failures, and electrical component malfunctions.
What do truck diagnostics reveal about engine health?
Truck diagnostics provide detailed information on fuel efficiency, emissions, and potential faults. By interpreting diagnostic codes, drivers and mechanics can spot problems early, maintain compliance, and optimize engine performance.
How can I get in touch?
You can reach us by phone at 336-257-8124. Our friendly staff is standing by to assist you with all your diagnostics and electrical repair needs. We look forward to hearing from you!

