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On-Site Heavy & Medium Construction and Diesel Equipment Repair and Maintenance Company.

Superior Service, Exceptional Results

GJH Motors has been able to service multiple locations with our trucks that are completely outfitted with tools, cranes, generators, welders, and parts. We are able to provide fast, dependable repairs that minimize downtime to maximize your productivity. Construction and industrial operations. In addition, our in-shop repair and maintenance facility located in Phoenix, Arizona for heavy & medium duty diesel trucks has skilled technicians equipped with state of the art diagnostic machines, lifts, and tools to perform necessary safety inspections and can give you a guaranteed reasonable repair estimate.

On-Site Heavy / Medium Construction Equipment Maintenance and Repair

GJH Motors provides reliable, on-site preventative maintenance and repair of heavy/ medium construction equipment from various manufacturers, including (but not limited to) Caterpillar, John Deere, Hitachi, Bobcat, and Komatsu. Our goal is to give our customers the best value and workmanship while reducing downtime at a competitive rate.

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On-Site Oil and Lube for Heavy/ Medium Construction Equipment

At GJH Motors, we understand the critical importance of keeping heavy and medium-duty construction equipment operating at peak performance. That's why we proudly offer comprehensive on-site oil and lube services tailored to the unique needs of heavy and medium construction equipment.

GJH Motors is experienced in delivering oil for various businesses in the heavy and medium equipment construction industry, including:


Highway Construction

Residential Construction

Commercial Construction

Mining Companies

Diesel Equipment

In-Shop Heavy / Medium Diesel Truck Repair and Maintenance

At GJH Motors, we specialize in providing comprehensive maintenance and repair solutions tailored to the unique needs of your fleet. With a team of highly skilled technicians and state-of-the-art equipment, we have the expertise and capabilities to handle all aspects of diesel truck maintenance and repair, from routine servicing to complex engine and transmission overhauls.

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On-site Heavy / Medium Diesel Truck Repair and Maintenance

Our team of experienced technicians specializes in diesel truck maintenance and repair, with expertise in handling heavy and medium-duty manufacturers (but not limited to) Kenworth, Freightliner, Volvo, Peterbilt, and Mack trucks. Whether you're facing a mechanical breakdown, need routine maintenance, or require emergency repairs, we have the skills and resources to get the job done right the first time.

Who We Are

About GJH Motors

GJH Motors, headquartered in Phoenix, Arizona, services on-site heavy & medium duty construction equipment repairs and maintenance - specializing and certified to service highway construction equipment, mobile oil & lube service for heavy & medium duty equipment, in- shop diesel engine & transmission repairs, and also mobile heavy &  medium duty diesel repair and maintenance services.


Year of Establishment


Repair Orders Completed


Professional Technicians


Business Partners

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Jeremiah & Sylvia Smith

Founders and CEO, GJH Motors LLC

Our Services

We Offer a Range of Mobile and In-Shop Services 

Our team of experienced and certified technicians is always ready to help you with your equipment repair and maintenance needs. We use state-of-the-art tools and equipment to ensure that your equipment is back up and running as soon as possible.

Our Work

Recent Work

At GJH Motors LLC, we take pride in our work and are committed to providing high-quality repair and maintenance services for heavy and medium-duty construction equipment and diesel trucks. Here is some of our recent work.

Contractual Clients

Building Together, Thriving Together

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Elevating Standards, Empowering Success

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