Fleet, Truck,

Diesel & Heavy

Equipment

Repair in

Fullerton, CA

24/7 Mobile Repair & Complete

Fleet Maintenance

Throughout Orange County

Fleet, Truck, Diesel & Heavy Equipment Repair in Fullerton, CA

24/7 Mobile Repair & Complete Fleet Maintenance Throughout Orange County

Fleet, Truck, Diesel & Heavy Equipment Repair in Fullerton, CA

24/7 Mobile Repair & Complete Fleet Maintenance Throughout Orange County

Orange-tinted photo of a white delivery van and box truck parked outdoors.

Our Diesel mechanics offer roadside big rig, fleet and equipment service throughout Orange County.

Two white semi-trucks parked in a lot under a clear sky

Recurring preventive maintenance, BIT and DOT inspections and commercial vehicle repairs for fleets of all sizes.

Yellow Volvo excavator on a flatbed truck beside a road under a blue sky

Trust us for on-site or in-shop repair and maintenance of backhoes, loaders, tractors and other heavy equipment.

White semi truck with front cab cover lifted open on a roadside, with another service truck in the background.

In-shop and mobile diesel diagnostics and repair for commercial trucks, fleet vehicles, motorhomes and construction equipment.

Mobile Truck Repair

Mobile Heavy Equipment Repair

24/7 Fleet Services

24/7 Roadside Assistance

Semi Truck & Big Rig Repair

Gas and Diesel Engine Repair

Truck Tire Sales and Services

Brakes, Steering and Suspension

Red OC logo with gray outline and shadow on a white background

Transmission Services

Engine Computer Diagnostics

Preventive Fleet Maintenance

On-Site Equipment Maintenance

BIT and DOT Inspections

RV and Motorhome Repair

12-Month Nationwide Parts and Labor Warranty

Environmentally Friendly Practices

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Complete Commercial Vehicle & Heavy Equipment Service

Locally owned and operated Orange County Fleet Services provides complete fleet vehicle repair, semi truck service, construction equipment repair, and 24/7 roadside assistance in Fullerton and throughout Orange County.

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As part of the Fleet Services International, LTD network, our local commercial vehicle repair facility is connected to more than 250 service centers nationwide and operates fully equipped mobile workstations powered by Richard Petty Garage. Our ASE Certified technicians provide in-shop and on-site service for small, medium, and large fleets ranging from a single vehicle to hundreds of units. We work on semi trucks, tractor trailers, box trucks, delivery vans, fleet cars, municipal vehicles, RVs, motorhomes, and heavy equipment such as excavators, bulldozers, backhoes, and forklifts. Whether you need scheduled fleet maintenance, diesel engine diagnostics, commercial truck repair, or immediate roadside help, our team has the tools and experience to minimize downtime and get your vehicles or equipment back to work. To request 24/7 roadside semi truck repair in Fullerton, Anaheim or a neighboring community, don’t hesitate to give our nearby commercial truck shop a call.

PROUDLY SERVING FULLERTON & ORANGE COUNTY

Orange County Fleet Services is proud to serve businesses and drivers throughout Fullerton, Anaheim, Brea, Placentia, Orange, Santa Ana, and communities across Orange County. Whether you need fleet maintenance, diesel repair, commercial truck service, heavy equipment repair, or 24/7 mobile roadside assistance, our experienced team provides dependable in-shop and on-site service to help minimize downtime and keep your vehicles and equipment working.

Orange County Fleet Services proudly supports local owner-operators, regional carriers, national fleets, government agencies, rental companies, contractors, and other organizations that depend on reliable commercial vehicles and equipment. Serving Fullerton, Anaheim, Santa Ana and the surrounding areas, our bumper-to-bumper services include preventive maintenance, oil changes, engine computer diagnostics, BIT and DOT inspections, brake repair, steering and suspension service, transmission work, truck tire services, gas and diesel engine repair, and on-site construction equipment maintenance. We invest in modern diagnostic technology, maintain ASE certification, offer competitive pricing and fast turnaround times, and follow environmentally responsible service practices. Qualifying repairs are also backed by a 12-month nationwide parts and labor warranty, helping provide added confidence wherever your vehicles travel. To request a quote for fleet repair or heavy equipment service in Fullerton, or to receive 24/7 mobile truck repair in Anaheim, Santa Ana, Orange, Irvine, Garden Grove, Costa Mesa, Tustin, and surrounding communities, call Orange County Fleet Services at 949-899-6802. We’re here to help, day or night.

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Man standing with arms raised in a warehouse doorway, with shelves and industrial equipment inside.
White lifted Chevrolet pickup truck in a car detailing showroom with CarPoint logo on the wall

Orange County Fleet Services Reviews

Read Our Google Customer Reviews

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★★★★★

“his truck was clean and organized down to his uniform...”


Thank you for the quick, honest , and knowledgeable service! Your tech went above and beyond by answering all my questions. Also, his truck was clean and organized down to his uniform. You’re going to be the first call when I break down again! So We’ll talk soon! hahaha!


— Detlef M.

★★★★★

“Great experience end to end...”


Darrin helped me troubleshoot the issue with my battery over the phone. His team got me a replacement in a few hours to get back up and running. Great experience end to end.


— Greg H.

★★★★★

“Excellent service, fair price, amazing response time...”


Fixed some show production trailers while we were in the middle of an event, so that we could save time on move out. Excellent service, fair price, amazing response time. We weren’t sure anyone would even be able to help us “on site”! Thanks!!


— Team Ski Dazzle

★★★★★

“they found a way to get me back on the road...”


AC went out in Nevada made it delivery in LA driving mostly at night. Company found OC Fleet Services and was assured they’ll solve the problem. They fixed it and it could’ve taken days waiting for a part but, they found a way to get me back on the road. Great service.


— Charles S.

★★★★★

“Will bring my equipment back anytime...”


Came into OCFS with a derate on my truck. Friendly, professional, timely service. Very fair pricing on top. Can’t ask for much more than they did. Time is money and I was only down for an afternoon thanks to them. Will bring my equipment back anytime. Highly recommend.


— Aaron B.

Blog

We invite you to monitor our News Blog for informative articles.

White semi-truck with a crushed front end pulled onto the roadside beside a highway

Common Big Rig Cooling System Problems that Should Be Fixed ASAP

July 17, 2026
Learn about common big rig cooling system issues like leaks & thermostat failures. Contact Orange County Fleet Services for 24/7 mobile repair.
Blue semi-truck driving on a wet highway under a gray sky, with trees in the background

What are some of the common causes of semi truck tire blowouts?

June 18, 2026
Learn common causes of semi truck tire blowouts, like improper inflation & overloads. Get 24/7 roadside assistance from Orange County Fleet Services.
Semi-truck driving on a dark highway with misty mountains in the background

Common Questions About Semi Truck Fuel System Repair in Fullerton, CA

May 25, 2026
Get expert semi truck fuel system repair. Our ASE certified technicians ensure your truck runs efficiently. Contact us for service!