Mon - Fri: 7:00AM - 5:00PM CST

Truck Diagnostics & Electrical Repair in Dallas, TX

Are electrical issues keeping your business sidelined? We provide comprehensive diagnostics and electrical services. Our technicians ensure your vehicles’ electrical systems are in top condition, enhancing performance and reliability.

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Diagnostics and Electrical Services

A well-maintained electrical system is crucial for the reliable operation of your fleet. Our comprehensive diagnostics and electrical services are designed to identify and resolve issues quickly and efficiently. Here are some of the key services we offer:

  • Comprehensive Diagnostic Testing: We provide in-depth diagnostic tests using state-of-the-art equipment to identify issues in your truck’s electrical and engine systems. This allows us to pinpoint problems accurately and address them before they escalate.
  • Battery and Charging System Repairs: We offer services to test, repair, and replace batteries and charging systems. A reliable battery and charging system are essential for starting your truck and powering electrical components.
  • Wiring and Electrical Component Repairs: Faulty wiring and electrical components can lead to various issues, from lighting failures to engine performance problems. We provide thorough inspections and repairs to ensure all electrical connections and components are functioning correctly.
  • Starter and Alternator Services: A malfunctioning starter or alternator can prevent your truck from operating. We offer repair and replacement services to ensure your truck starts reliably and the electrical system is adequately powered.
  • Lighting System Repairs: Proper lighting is crucial for safety and compliance with regulations. We provide repairs and replacements for all types of truck lighting systems, ensuring your fleet remains visible and safe on the road.

Schedule Your Diagnostics and Electrical Service Today

For expert diagnostics and electrical services, contact Barnes Brothers Fleet Maintenance at (972) 241-9111. Our team is ready to provide top-notch services to keep your heavy-duty and medium-duty truck fleets running efficiently and safely. Call us to schedule an appointment or learn more about our electrical services.


What are common signs of electrical issues?

Common signs of electrical issues in trucks include dim or flickering lights, slow engine crank, dead battery, malfunctioning gauges, and warning lights on the dashboard. If you notice any of these symptoms, it’s important to have your truck’s electrical system inspected and repaired promptly to avoid further issues.

How does a truck diagnostic test work?

A truck diagnostic test involves connecting the vehicle to a specialized diagnostic tool that reads error codes from the truck’s onboard computer system. These codes indicate specific issues with the engine, transmission, brakes, or other systems. Our technicians interpret these codes to accurately diagnose and address any problems.

What areas do you serve?

We proudly serve within a 60-mile radius of Dallas, Texas, ensuring that our mobile repair team can promptly reach your location when you need assistance. This includes the following areas in Texas: Garland, Plano, Arlington, Denton, Fort Worth, Irving, Carrollton, McKinney, Mesquite, Duncanville, Rockwall, and many more.

How can I get in touch?

For expert diagnostics and electrical services, call Barnes Brothers Fleet Maintenance at (972) 241-9111. Our team is ready to provide top-notch service for your fleet’s needs, ensuring your vehicles remain in optimal condition. Don’t hesitate to reach out for reliable and professional assistance.


Truck & Fleet Repairs

When it comes to repairs, our technicians are proficient in diagnosing and resolving a variety of issues. From engine and brake repairs to electrical system troubleshooting, we can address any problem your fleet may encounter.

Don't Take our word for it.
Read Our Customer Testimonials.

"The company where I work for FBM, we have a little more than a year of service with Barnes brothers. I want to mention KANG. He is always attentive to our repair needs, always keeping us up to date and letting us know about the progress, always trying to help in any way, he is a person you can count on and be appreciated."

Jorge Rodriguez

"The whole staff was Great took a bit longer than expected but overall Good Professional Job Really enjoyed seeing Mechinic that put his Heart into doing  the best job possible Very informative of letting me know what was going on Thank You Jason and Philippe for a Job well done Respectfully Barry (Aka Western Star)"

Barry Bolton

"The team over at Barnes Brothers Truck and Trailer repair have been a huge help in our quest to improve our vehicle maintenance program.  They have jumped in and provided the guidance and tips we needed in order to lower our repair costs through preventive maintenance.  We appreciate their ability to handle a wide range of truck repairs and we take full advantage of their field service capabilities.  They take care of us!"

Troy Butt

Contact Us

Let us know what is going on with your vehicle, and we will get back to you soon with a quote.

Contact Information

Phone Number



Monday - Friday:
7:00AM - 5:00PM CST


7125 Harry Hines Blvd.
TX 75235
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