Diagnostics and electrical repairs keep your heavy-duty truck running smoothly — no matter what business you're in or how hard it's pushed. Our techs find the fault fast and get you back on the road.
Diagnostics and electrical repairs can help you keep your heavy-duty truck running smoothly no matter what business you're in or how much it's pushed to the limits.
We know that needing truck diagnostics and electrical service is stressful. You want to know what's wrong, and you want to get it fixed quickly. That's why our team works through the problem methodically — from hard starts and power loss to fuel contamination, black exhaust and unusual engine noise — and gives you a realistic timeline for the repair up front.
We also address problems with broken and loose wires, switches, and connectors that impact the electronic systems in your diesel truck. Although they are reliable, these components wear out over time and need repair or replacement. For diagnostics and electrical repair in Statesville, Bessemer City and Monroe, North Carolina, Gallaher Fleet Solutions is the first place you should call.
Call the shop nearest you, or send a message and we'll get back to you the same business day.
Needing diagnostics is stressful. You want to know what's wrong and get it fixed quickly — we give you a clear answer and a realistic repair timeline.
These are the problems we help with every day, with a timeline estimate for diagnostics and repair in our shop.
Difficulty starting: it shouldn't take long to crank your engine. Repair or replacement takes 2–4 hours.
Losing power: dirty fuel filters, injector problems and loose throttle links rob power when you accelerate. Repair takes 4–6 hours.
Fuel contamination: diesel holds glycol, water and soot more easily than gas. Flushing the system takes 15–30 minutes.
Black exhaust: usually a high fuel-to-air ratio from broken filters, injectors or pumps. Cleaning the air system takes around 40 minutes.
Faulty leads: the acid storage battery is a key part of the starter system. Replacing faulty leads takes 1–5 hours depending on the truck's system.
Wires, switches & connectors: broken or loose components wear out over time and affect your truck's electronic systems.
Oil oxidation & viscosity: trucks that sit too long get bubbles in the oil, and the wrong viscosity causes hard starts. An oil change takes 15–45 minutes; rebalancing takes up to 2 hours.
Too much noise: a new sound means something's wrong. A standard tune-up takes 2–4 hours.
That check-engine light is your truck trying to tell you something. We walk through how diesel trouble codes (DTCs) work, what the most common codes mean, and when a code calls for a quick fix versus a trip to the shop. Read the article →
