Heavy-Duty Truck Repair & Fleet Services in Chicago Heights, IL

Get in touch with Fleet Tech today for top-rated heavy-duty truck repair & commercial fleet maintenance services in Chicago Heights, Illinois. Our diesel mechanic team specializes in the repair and maintenance of all makes and models of heavy-duty trucks, trailers, & heavy equipment. We perform services in shop, or via our mobile truck repair & emergency roadside assistance services. Contact Fleet Tech today to schedule service!

Fleet Tech: A Name You Can Trust

At Fleet Tech Inc, we've built our reputation on reliability, innovation, and an unwavering commitment to quality. Our team has over 20 years of experience in the industry, providing unparalleled heavy-duty truck and railroad equipment repairs, earning the trust of clients who value expertise and thoroughness.

Fleet Tech Inc team

Trucks We Work With

Heavy-Duty Truck Repair Experts

High-quality repairs in heavy-duty trucks are essential for safety and efficiency. For instance, proper brake repairs prevent accidents and ensure optimal stopping power.

Heavy-duty truck in for repairs
After Hours Key Drop
Vehicle Pick Up
Vehicle Drop Off


Heavy-Duty Diesel Mechanic Services

Our heavy-duty diesel mechanic services play a vital role in the transportation industry. Preventive maintenance, for example, extends the life of a vehicle and prevents unexpected failures. Additionally, welding repairs strengthen structural integrity and ensure reliability.

Don't Take our word for it.
Read Customer Testimonials.

"I've been taking all my company Trucks and equipment to Fleet Tech for the last 10 years. These guys really are the best around, they are some of the most understanding people I've ever met! They get it fixed and they do it right! You won't have to worry a bit if you take something here."

Damian Kleckner

"Everyone over at Fleet Tech is amazing. From the office staff to the guys out in the field. A++ operation all the way around. Highly recommended for all your fleets needs! Testimonial written by Matt S. on this site."

Matt S.

"Best of the best! They always get me back on the road when my stuff breaks down."

Joshn Rietveld

Contact Us

Get in touch with Fleet Tech Inc. today to schedule professional diesel mechanic services in the Chicago Heights, Illinois area!

Phone Number



Monday - Friday:
7:00AM - 5:00PM


901 State St,
Chicago Heights,
IL 60411
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Frequently Asked Questions


Find answers to frequently asked questions

How Do I Know If My Trailer Brakes Are Worn Out?

To determine if your trailer brakes are worn out, listen for squealing or grinding noises during braking, which typically indicate that the brake pads or shoes are excessively worn. Additionally, if you experience decreased braking responsiveness or if the trailer pulls to one side when braking, these are signs that the brakes may need attention. Therefore, regular inspections and maintenance are crucial to ensure your trailer brakes remain effective and safe.

What Are The Two Types Of Fleets?

There are two primary types of fleets: commercial and private. Commercial fleets are operated by businesses for the delivery of goods and services, including transportation companies, freight haulers, and logistics providers. Private fleets are those owned and operated by businesses for their own purposes, such as corporate car fleets or utility company vehicles. Both types require efficient management to optimize their operations, reduce costs, and maintain vehicle integrity and safety.

Do All Trucks Take The Same Coolant?

Not all trucks take the same coolant. Different engines may require specific types of coolant to ensure optimal performance and protection against corrosion and overheating. It's important to consult the truck's manufacturer guidelines to determine the correct type of coolant needed for your specific model. This ensures that the coolant provides adequate protection for the engine's materials and operating conditions, preventing premature wear and potential engine damage.

What Is DPF Regeneration?

DPF regeneration is the process of cleaning the diesel particulate filter (DPF) in vehicles with diesel engines. Over time, the DPF collects soot and particulate matter from the exhaust, which can clog the filter. Regeneration involves burning off the accumulated soot at high temperatures, typically around 600 degrees Celsius, which turns the soot into a smaller amount of ash. This process can be passive, occurring naturally during driving, or active, where the vehicle modifies its operation to increase exhaust temperatures and initiate regeneration.

How Can I Get In Touch For Truck Repairs?

If your fleet needs help give Fleet Tech Inc a call and we’ll fix your truck up in no time. With experienced mechanics that efficiently diagnose and repair heavy-duty trucks, trust that your vehicle will receive tender love and care! If you have any other questions about our services, give us a call and our customer service representative will be ready to answer.

What Areas Do We Offer Heavy-Duty Truck Services?

Fleet Tech Inc, located in Chicago Heights, IL, offers specialized repairs for heavy-duty trucks and railroad equipment. Our services reach across the region, ensuring that truck owners in cities like Romeoville, Chicago, and Joliet receive the expert care their vehicles require. With a commitment to superior quality and customer satisfaction, we ensure that each job is completed to the highest standards. We also serve the following cities:

- Kankakee, IL
- Homewood, IL
- Harvey, IL
- Tinley Park, IL
- Hammond, IN
- Gary, IN