Repair, Maintenance, and Service Since 1975 - A Name You Can Trust
State Line Truck Service is a family-owned and operated business with a rich history spanning over four decades. Founded in 1975 by Kendall "Gus" Crocker, the company originated as a service facility to support KF Crocker Transportation, a dairy hauling business owned and operated by Gus's family. Recognizing the community's need for reliable truck service, Gus established State Line Truck Service, which quickly grew into a thriving dealership.
Driven by a commitment to customer satisfaction and a passion for the trucking industry, State Line Truck Service has remained a cornerstone of the New England transportation community. Gus's wife, Linda, joined the business in 1978, playing a vital role in its success until her passing in 2017. Today, State Line Truck Service proudly continues its legacy under the leadership of Gus and Linda's daughter, Kelly, who purchased the business in 2007. Kelly's daughter, Emily Stauffeneker, joined the company in 2014, along with her daughter-in-law, Keri Coll in 2015, solidifying the next generation of leadership for this family-driven business.
Our Services
State Line Truck Service offers a comprehensive suite of services designed to keep your trucks running smoothly. Our highly skilled technicians are equipped to handle a wide range of repairs, inspections, and maintenance tasks, ensuring your vehicles are always in top condition. We service all makes and models, providing expert care regardless of the brand.
Our services encompass:
- Trailer Work: We specialize in trailer repairs and maintenance, handling everything from brake systems and suspension components to king pins, plate replacement, and door/roof repairs.
- Alignments: Utilizing Josam laser alignment technology, we provide precise medium and heavy-duty wheel alignments, ensuring optimal tire wear and driving performance.
- Inspections & Tune-Ups: We perform comprehensive inspections, including State of New Hampshire inspections, DOT inspections, and NH overweight inspections. Our meticulous tune-ups keep your engine running efficiently and reliably.
- Frame Rails: As an authorized dealer, we stock and install genuine Mack frame rails. We also offer frame rail lengthening and shortening services, accommodating any customization needs.
- Seasonal Specials: Throughout the year, we run special promotions on parts and services, providing our customers with the most value for their investment.
State Line Truck Service is committed to providing the highest quality service and repairs, backed by our unwavering dedication to customer satisfaction. We constantly strive to exceed expectations, fostering long-lasting relationships with our valued customers.
Our Commitment
At State Line Truck Service, we believe in building trust and lasting relationships with our customers. We go the extra mile to ensure your complete satisfaction, providing honest advice, transparent pricing, and timely completion of all services. With a team of experienced professionals and a commitment to staying at the forefront of industry advancements, we are your trusted partner for all your truck service needs.

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