Are you experiencing issues with your heavy-duty truck's performance? Hex 6 Diesel Services, located in Tyler, TX, specializes in diagnostics and electrical repair for all your heavy-duty needs. Discover our expert services that keep your vehicle running smoothly.

What Software Is Used to Diagnose Trucks?
At Hex 6 Diesel Services, we employ state-of-the-art diagnostic software, such as JPRO, TEXA, and Cummins Insite. These tools provide accurate, detailed insights into your truck's health, ensuring precise and efficient repairs.
The Repair Process
At Hex 6 Diesel Services, we follow a meticulously planned repair process. Our approach to heavy-duty diagnostics and electrical repair involves several key steps:
Initial Consultation: We begin by discussing the issues you're experiencing with your truck. This helps us get a clear understanding of the potential problems.
Diagnostic Testing: Utilizing advanced software, we conduct thorough diagnostics to pinpoint the exact issues, whether they are engine-related, electrical, or other mechanical faults.
Detailed Reporting: After diagnostics, we provide a comprehensive report detailing the identified issues, potential causes, and suggested repairs.
Repair Plan: We develop a customized repair plan, prioritizing critical repairs to ensure your truck's optimal performance and safety.
Quality Repairs: Our team of skilled mechanics, equipped with the latest tools, performs the necessary repairs, adhering to the highest standards of quality and efficiency.
Final Testing and Validation: Post-repair, we conduct final tests to ensure that all issues have been resolved and your truck is in top condition.
Customer Review and Feedback: We value your input and encourage feedback post-repair to ensure your complete satisfaction.
Truck Electrical Repair in Tyler, TX
Electrical issues in heavy-duty trucks can be complex and challenging. At Hex 6 Diesel Services, we specialize in diagnosing and repairing electrical problems, from wiring issues to malfunctioning electronic control units. Our team is equipped to handle all electrical repair needs with precision and expertise.
If you're in need of diagnostics and electrical repair for your heavy-duty truck, get in touch with Hex 6 Diesel Services in Tyler, TX, today!
Types of Vehicles We Work On
Our highly skilled team is also able to carry out diagnostic and electrical repairs on a range of on- and off-highway vehicles, including:
- Oil and gas industry equipment
- Agriculture equipment
- Municipality vehicles
- Heavy equipment
- Commercial on-highway trucks, trailers and tankers
- RVs and buses
- Diesel trucks
FAQs
Why Does a Heavy-Duty Truck Have Electrical Problems That Only Happen While Driving?
Intermittent electrical faults can appear only when vibration, heat, or vehicle movement affects a weak connection. Loose grounds, damaged harnesses, corroded connectors, or failing relays may test normally in the shop, so technicians often need live testing while the truck is operating.
What Causes a Diesel Truck to Crank but Not Start With No Clear Fault Code?
A crank-no-start condition without a useful fault code may involve low battery voltage, poor grounds, sensor signal loss, damaged wiring, relay problems, or communication faults between control modules. Testing power, ground, signal, and network circuits can narrow down the failure.
How Do Technicians Diagnose a Parasitic Battery Drain on a Commercial Truck?
Parasitic drain testing measures how much current continues flowing after the truck is shut down. Technicians isolate circuits, modules, accessories, relays, and wiring until the excessive draw is identified, which helps prevent repeated dead batteries and unnecessary battery replacement.
Why Does a Heavy-Duty Truck Keep Blowing the Same Fuse?
A fuse that repeatedly blows usually indicates an electrical problem rather than a bad fuse. Shorted wiring, damaged insulation, overloaded circuits, failing motors, or faulty components can create excessive current, so the affected circuit should be tested before another fuse is installed.
How Do You Get to Hex 6 in Tyler?
Truck and equipment owners visiting Hex 6 for diagnostics and electrical repair can find the shop at 5406 FM 850, Tyler, TX 75705. Major roads around Tyler provide access to FM 850 on the northeast side of the city. Drivers arriving from I-20 can take US-271 south toward Tyler before connecting with local roads that lead to FM 850. Another route from central Tyler follows Loop 323 to US-271, then continues northeast toward the Hex 6 area.
Follow the connecting roads to FM 850 and continue toward Hex 6. A nearby Shell gas station provides a useful reference point during the approach. Hollywood Door of Tyler is another business in the area that drivers may notice as they get closer.
Areas Also Serve For Diagnostic and Electrical Repairs in Texas
As well as Tyler, TX, we also proudly bring our diagnostic and electrical repair service to the following surrounding areas, Longview, TX, Kilgore, TX, Jacksonville, TX, Henderson, TX, Athens, TX, Palestine, TX, Sulphur Springs, TX, Marshall, TX, Nacogdoches, TX, Lufkin, TX, Corsicana, TX, Dallas, TX, Plano, TX, Garland, TX, Mesquite, TX, Terrell, TX, Greenville, TX, Mount Pleasant, TX, and Paris, TX.

