Heavy-Duty Truck Diagnostics & Electrical Repair in Dubuque, IA

Electrical issues can be hard to trace—and even harder to fix without the right tools. If your truck’s throwing codes or draining batteries, our heavy-duty diagnostic and electrical repair finds what others miss and gets you back on schedule.

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Semi Truck Electrical Repair in Dubuque, IA

Modern diesel trucks rely on complex electronics. A failed alternator, malfunctioning starter, or bad wiring can trigger dashboard alerts, disable key functions, and lead to expensive downtime.

Luckily, we're on hand to get you back on the road. Our team uses advanced diagnostic scanners and diesel truck diagnostic tools to identify faults fast. From battery repair to alternator replacement and full electrical troubleshooting, we’ve got the tools and experience to get your power systems running right.

Here’s what we test and repair:

  • Electrical shorts and broken wires
  • Faulty alternators, batteries, and starters
  • Blown fuses and corroded terminals
  • Sensor failures and dashboard warning lights
  • Full diagnostic service for codes and performance issues

Experience the Guys Truck and Tractor Difference!

You don’t have time for guesswork. You need answers—and solutions—without delay. And that's exactly what you get when you trust our team!

Two Fully Equipped Locations: You’re never far from help with shops in Kieler, WI, and Galena, IL. We keep electrical repairs moving efficiently.

22 Service Bays: With capacity built for fleets, we keep trucks moving through without bottlenecks or unnecessary delays.

Nearly 40 Years of Experience: Since 1977, we’ve solved electrical issues in all types of heavy-duty trucks. We know where to look and how to fix it—fast.

Workmanship and Parts Warranties: Every repair is backed by a 6-month warranty on labor and full manufacturer parts warranties.

Contact Us About Truck Electrical Repair Now: Call 608-568-3257!

If your lights, sensors, or systems aren’t behaving right, don’t wait for them to derail your operations. Call 608-568-3257 to book your truck electrical repair or diesel diagnostic service today. We’ll find the issue and fix it fast—so you stay on schedule!

FAQs

What Areas Do You Serve For Heavy-Duty Diagnostic and Electrical Repair?

****Kieler, WI Location: 3405 County Road HHH, Kieler, WI 53812 – Call us at 608-568-3257****

We proudly serve: Dubuque, IA; Platteville, WI; Monroe, WI; Freeport, IL; Madison, WI; Waunakee, WI; Middleton, WI; Fitchburg, WI; Hazel Green, WI; Dickeyville, WI; Cuba City, WI; and Benton, WI.

****Galena, IL Location: 11521 AJ Harle Dr, Galena, IL – Call us at 815-777-3257****

We offer our services in the following areas: Dubuque, IA; Freeport, IL; Clinton, IA; Sterling, IL; Rock Falls, IL; Moline, IL; Rock Island, IL; Platteville, WI; Monroe, WI; East Dubuque, IL; Hazel Green, WI; Stockton, IL; Elizabeth, IL; Apple River, IL; Hanover, IL; and Warren, IL.

What Does a Full Engine Diagnostic Include?

A full engine diagnostic for heavy-duty diesel vehicles includes scanning for fault codes and checking sensors, fuel systems, turbochargers, exhaust systems, and emissions controls. It also involves evaluating engine performance data, inspecting wiring and connectors, and identifying issues affecting power, efficiency, or emissions compliance.

Can You Drive a Truck With Electrical Issues?

Driving a heavy-duty truck with electrical issues is risky and can lead to critical failures. Electrical problems may affect lighting, braking systems, sensors, or engine controls. Minor issues might allow limited driving, but it’s best to diagnose and repair faults promptly to ensure safety and compliance.

How Can I Get Heavy-Duty Diagnostic and Electrical Repair?

Just call 608-568-3257. We’ll diagnose the issue fast, explain the repair clearly, and get your truck running right—without delays or surprises. Whatever you need, we've got you covered!

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REPAIRS

Our Heavy-Duty Truck Repair Services

When something breaks, you need it fixed fast and fixed right. Our heavy-duty repairs cover everything from engines, brakes, and axles to driveline, suspension, and alignment work

With decades of diesel expertise, state-of-the-art diagnostics, and a team that keeps you informed with every step of the journey, you’ll get back on the road with confidence. We back all workmanship with a 6-month warranty, so there’s no guesswork; just results.

Whether it’s a quick fix or a full rebuild, we’ve got you covered!

REVIEWS

Testimonials

Here's what our customers are saying, feel free to leave us a review!

Edward Toma

No other shop was willing to work on my wrecker.I need it the whole under lift manufactured and Aron did an amazing job. I can’t thank them enough. It was worth the drive about 500 miles from Michigan. Fair prices and amazing work .
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These guys are great! My loaded down Chevy Silverado blew a tire while on my way back home to Iowa from Milwaukee. I was in a dangerous situation on the highway.
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Great service. Quick and amazing to work with. Couldn't have found a better shop to do business with, has been an amazing experience. These guys here actually listen to you and your wants and gets the job done.
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Galena Location
Kieler Location