Whether you're hauling freight through the Lakes Region, supporting a construction project, or managing a commercial fleet, unexpected truck problems can interrupt your entire operation. Tri-State Diesel Repair provides dependable truck repair in Gilford, NH, offering professional diagnostics, diesel engine repairs, preventive maintenance, and responsive roadside support to keep your vehicles operating at their best.
Our technicians understand the demands placed on commercial trucks and work efficiently to deliver lasting repairs that minimize downtime. From scheduled maintenance at our Belmont repair shop to mobile truck repair in Gilford, we're committed to providing reliable service whenever and wherever you need it.
Why Choose Tri-State Diesel Repair in Gilford, NH?
At Tri-State Diesel Repair, we believe quality repairs start with experienced technicians and honest service. Since opening in 2017, our family-owned company has built strong relationships with trucking companies, municipalities, contractors, and independent owner-operators throughout New Hampshire. Founded by military veteran Seth Bubar, we take pride in delivering dependable diesel repair backed by integrity, professionalism, and attention to detail.
Our location near Gilford allows us to respond quickly for both scheduled service and roadside assistance. Whether you need ongoing fleet maintenance, emergency repairs, or a trusted diesel mechanic near Gilford, NH, we provide practical solutions that help extend the life of your trucks while reducing costly interruptions to your business.
Frequently Asked Questions
1. Do you offer truck repair for businesses operating around Lake Winnipesaukee?
Yes. We regularly assist commercial drivers and businesses throughout Gilford, the Lakes Region, and surrounding communities with both in-shop repairs and mobile truck services.
2. What are the benefits of choosing mobile truck repair?
Mobile service allows many repairs and maintenance tasks to be completed where your truck is located, helping reduce towing expenses and minimizing time spent off the road.
3. Can you service fleets with multiple diesel trucks?
Absolutely. We work with fleets of various sizes and provide maintenance plans designed to improve reliability, reduce unexpected repairs, and keep your vehicles operating efficiently.
4. What if my truck experiences a mechanical issue outside normal business hours?
Our roadside assistance is available daily until 10 PM, with emergency support on nights and weekends when available. We'll work quickly to provide the assistance needed to get your truck moving again.
5. Why should I trust Tri-State Diesel Repair with my commercial truck?
We combine certified diesel expertise, responsive customer service, and years of experience servicing heavy-duty trucks throughout the region. Our goal is to provide dependable repairs that help your business stay productive and your vehicles remain road-ready.
Our Service Area - Serving All Neigboring Areas in Lakes Region

Tri-State Diesel Repair is a veteran-owned truck and trailer repair company based in Belmont, NH, offering expert mobile diesel repair, fleet maintenance, and roadside assistance across Lakes Region NH Trusted. Fast.

