Heavy-Duty Truck repair Services

Truck Diagnostics & Electrical Repair Services in Plaistow, NH & Surrounding Areas

Need Expert Heavy-Duty Electrical and Diagnostic Repairs in Plaistow, NH? Tri-State Diesel Repair has you covered! Our team of skilled technicians specializes in providing top-notch heavy-duty electrical and diagnostic repairs for trucks and fleets in Plaistow, NH.

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Can You Drive With a Bad Wiring Harness?

A bad wiring harness can lead to many issues, including damage to critical parts of your truck and the risk of getting into an accident while on the road. It's essential to address any wiring problems promptly to ensure the safety and efficiency of your vehicle. 

How Long Does Truck Diagnostic Take?

When you bring your heavy-duty truck to Tri-State Diesel Repair for a diagnostic test, you can expect the process to take about an hour to an hour and a half. Although more complex procedures can take anywhere between 2 - 4 hours to carry out.

Truck Electrical Repair in Plaistow, NH

At Tri-State Diesel Repair, we specialize in a wide range of electrical repairs for heavy-duty trucks. Our expert technicians are well-versed in handling complex electrical systems, ensuring that your vehicle operates at its best. Some of our key electrical repair services include:

Alternator Replacement: If your truck's alternator is malfunctioning, it can lead to battery issues and electrical failures. Our team can quickly diagnose and replace faulty alternators, keeping your truck powered and operational.

Starter Motor Repair: A faulty starter motor can leave you stranded. We can repair or replace starter motors to ensure smooth engine cranking and reliable vehicle start-up.

Battery System Inspection: A well-functioning battery is essential for your truck's electrical system. We conduct thorough battery inspections and provide maintenance or replacements as needed.

Lighting System Repairs: Proper lighting is crucial for safety on the road. Our experts can fix issues with headlights, taillights, and other lighting components to ensure optimal visibility.

Wiring Repairs: Faulty wiring can cause a range of problems, from electrical malfunctions to potential fire hazards. We specialize in repairing and rewiring faulty systems to guarantee long-lasting performance.

Areas We Also Serve For Electrical and Diagnostic Repairs

We proudly bring our electrical and diagnostic repair service to within 25 miles of Plaistow, NH, including the following areas:

New Hampshire 

Portsmouth, NH.

Maine 

Kittery, ME. 

Massachusetts

Rockport, MA; Manchester-by-the-Sea, MH; Salem, MH.

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Get in touch with Tri-State Diesel Repair today to schedule, truck & equipment repair services in Plaistow, NH & the surrounding areas.

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Our Truck Repair Services

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Axle Repair

Our adept technicians possess the finesse and expertise to skillfully manage truck axle repairs, all while meticulously tending to even the minutest intricacies.

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Brake Repair

Tri-State Diesel Repair is your go-to for premium brake solutions that guarantee safety and performance. Don't compromise on the efficiency of your truck's braking system.

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Coolant System Repair

From coolant system maintenance to radiator repairs, we've got all your coolant system repairs covered. Trust the professionals who understand the ins and outs of heavy-duty vehicles.

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Performance ECM Tuning

We deliver cutting-edge Heavy-Duty Performance ECM Tuning service. Boost your truck's performance, increase fuel efficiency, and gain more horsepower and torque.

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Diagnostics & Electrical Repair

In the heart of Plaistow, NH, our team of adept technicians specializes in delivering exceptional heavy-duty electrical and diagnostic repairs tailored to trucks and fleets.

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Driveline Repair

Tri-State Repair, located in Plaistow, NH, stands ready to provide a solution with our all-encompassing driveline repair services, specially designed for heavy-duty trucks.

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EGR & DPF

Your aftertreatment systems need to be in top shape, not just for performance on the road but to stay on the right side of the EPA and their regulations.

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Engine Repair, Rebuild, Overhaul & Conversion

Whether it's a simple repair, a complete engine rebuild, or even a conversion project, we've got you covered!

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Express Lube Repair

Our exceptional express lube service guarantees a swift and confident return to the road. Count on us to have you back behind the wheel in no time, feeling assured and ready to go.

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Exhaust System Repair

Ready to enhance truck performance and meet emissions standards? Our solutions offer a seamless blend of increased power and environmental responsibility.

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HVAC System Repair

Our team of skilled technicians specializes in heavy-duty HVAC system repairs to keep your trucks running smoothly, no matter the weather or the road ahead.

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Oil & Fluid

Our skilled team delivers exceptional heavy-duty oil and fluid repairs. With our expertise, your trucks will continue to operate smoothly and efficiently, minimizing downtime.

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Suspension Repair

Is your ride feeling a bit bumpy? Then rely on our heavy-duty suspension repair service to sort out all of your suspension woes and get you back on the road safely and comfortably.

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Tire Repair

Recognizing the critical significance of uninterrupted vehicle operation, we provide dependable tire repair services tailored precisely to your requirements.

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Transmission & Clutch Repair

Our expert technicians specialize in all aspects of heavy-duty diesel repair, utilizing advanced techniques to ensure your vehicles perform at their best on the road.

"Seth, is friendly and professional.  He showed up on time and finished the job. Excellent mechanic!"
Jevon Hamm

New England Firewood, LLC

5 star review

"I have been using Wrenchn-It Diesel for over 4 years now. Started with oil change for dump truck, mobile service for replacing hydraulic lines and belts on machines. Seth has always been there on short notice and is a great mechanic. Just a great overall guy and very easy to work with. Highly recommend!"

"I had a hub bearing go out on my truck. Butler's Truck Repair got me fixed up quickly and did great work at a very fair price. I highly recommend them for all repairs, from pickups to semi trucks. Thanks  to Sam for the great work."

Craig Loring

5 star review

"I gotta give a big shoutout to the team at WRENCHN’ IT DIESEL REPAIR! They went above and beyond to accommodate me and my family in getting our rig back on the road!
I CANT THANK YOU ENOUGH SETH!"

"I had a hub bearing go out on my truck. Butler's Truck Repair got me fixed up quickly and did great work at a very fair price. I highly recommend them for all repairs, from pickups to semi trucks. Thanks  to Sam for the great work."

DANNY MOHAMMED

5 star review

"Studs broke on my truck called all around nobody was able to fix it or had the time, called wrench it and he said no problem but it will be a wait,the man went pick up studs nuts and rims And came out to me and fixed in the rain. Thumbs up to this guy. All our truck repairs up in this area will be done by them. Highly recommend 👌"

"I had a hub bearing go out on my truck. Butler's Truck Repair got me fixed up quickly and did great work at a very fair price. I highly recommend them for all repairs, from pickups to semi trucks. Thanks  to Sam for the great work."