Heavy-Duty Diagnostics & Electrical
Stop Guessing. Get Expert Heavy-Duty Diagnostics Right on the Shoulder.
We bring dealer-level computer diagnostics and advanced electrical troubleshooting directly to your breakdown location on the I-40. Fast, accurate, and available 24/7.
Call now for Mobile Diagnostics
(928) 577-1496
Advanced Semi-Truck Diagnostics & Electrical Troubleshooting
When your dash lights up like a Christmas tree or your rig goes into derate, paying for a heavy wrecker to drag you to a shop wastes precious time and money. TRT Road Service uses cutting-edge diagnostic software to pull fault codes, monitor live engine data, and clear errors directly at your location.
Whether you are dealing with a complex wiring short, a dead alternator, or sensor failures, our mobile mechanics arrive equipped to pinpoint the exact electrical issue and fix it on the spot so you can get back on schedule.
Dealer-Level Computer Diagnostics
Forced DPF Regens & Emissions Resets
Electrical System Troubleshooting (Shorts & Wiring)
Alternator, Starter & Battery Replacements
Sensor Testing & Calibrations
Air Brake Electrical Component Repair
Why Call TRT for Mobile Electrical Repair?
Fast, Reliable Electrical Troubleshooting on the I-40
Don’t let a faulty sensor ruin your transit time. We bring the repair shop to you.
Trusted & Professional
Certified diesel technicians equipped with the latest commercial diagnostic software for all major engine makes.
Flexible Payment Options
We accept major credit cards, Zelle, Apple Pay and CASH to get you authorized and rolling faster.
Fast I-40 Response
Rapid emergency dispatch times spanning the entire corridor from Kingman to Barstow.
Dealership Capabilities
We clear stubborn codes and fix complex electrical shorts that standard mobile mechanics can't touch.
Don't Pay for a Tow Just to Read a Code.
We’ll come to you, diagnose the issue, get your rig out of derate, and get you back on the road. Available 24 hours a day.
Common Mobile Diagnostics Questions
Mobile Diagnostics & Electrical FAQs
Got questions about forced regens, clearing codes, or roadside electrical repairs? We have answers.
Yes. If your truck is stuck in derate due to a clogged DPF, our mobile diagnostic computers can initiate a forced regeneration and clear the emissions fault codes right on the highway shoulder.
We provide 24/7 mobile roadside service along the entire I-40 corridor, spanning from Kingman, AZ to Barstow, CA.
Absolutely. We carry commercial-grade testing equipment to verify the failure, and we can source and install alternators, starters, and high-cranking batteries directly at your breakdown location.
Our dedicated service trucks are dispatched immediately when you call. While exact ETAs depend on your specific mile marker along the I-40 (between Kingman and Barstow), we prioritize rapid response to keep your downtime to an absolute minimum.
Our dealer-level diagnostic software covers all major commercial heavy-duty engines, including Cummins, Detroit Diesel, PACCAR, Volvo, Mack, and Navistar/International.
We make it easy for drivers and dispatchers. We accept all major credit cards, Comchek, EFS, and T-Chek. We regularly work directly with fleet breakdown departments to handle payment authorization over the phone so you can focus on your logbook.
We resolve the vast majority of sensor, regen, and electrical issues right there on the highway. However, if our diagnostics reveal a catastrophic failure requiring a full shop, you will have the exact fault codes and diagnosis in hand. This saves you from being at the mercy of a shop's diagnostic queue and ensures you only pay for the exact tow you need.