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24/7 Emergency Heavy Duty Repair Services in Phoenix, AZ

Truck & Equipment Repair Shop in Phoenix, AZ

We Are Onsite Truck & Equipment Repair in Phoenix, AZ

Onsite Truck & Equipment Repair is a family-owned and operated truck and equipment repair shop serving businesses and truck drivers throughout the Phoenix metro area. We invest in the latest diagnostic equipment to guarantee the trucks we work on are serviced correctly, and we only use quality replacement parts to maintain your manufacturer’s warranty. From heavy-duty semi-trucks and trailers to light-duty pickups, from fleet vehicles to forklifts, our shop offers superior workmanship, and our mobile service is available to you 24/7 in case of an emergency.

Our business is family-owned and operated, and it’s a difference you can feel compared to franchise truck service centers and dealerships. Get to know our family and learn more about us.

More About Us
Truck technician fixing air intake

Our Medium & Heavy-Duty Truck Repair Services

Our team of certified diesel mechanics have the experience and the expertise to handle basic to complex commercial truck repair and maintenance, both in-shop and onsite. From DOT inspections and preventive maintenance, to comprehensive diesel engine repairs, trust the technicians at Onsite Truck & Equipment Repair, Phoenix's top-rated choice for fleet owners and owner-operators.

A/C System Repair

Your comfort in the cabin is the key to working your best. Our technicians make sure your cooling and ventilation are in top shape so that you can stay on the road whatever the weather.

See more about A/C System Repair>


Vehicle pulling to the left or right? Uneven or rapid tire wear? Is your steering wheel crooked when driving straight? You probably need a wheel alignment.

See more about Alignment>

DOT Inspections & Mobile Preventive Maintenance

The safety and reliability of your vehicle is our top priority. Our licensed technicians will keep you compliant with Arizona’s DOT, driving safely, and get you back to work quickly.

See more about DOT Inspections & Mobile Preventive Maintenance>

Diagnostics & Electrical Repair

We have a systematic approach to diagnostics that gets us to the root of a problem quickly. Whether we're dealing with complex issues or something simple, we have a set of procedures we follow to ensure we’re always improving.

See more about Diagnostics & Electrical Repair>

Driveline Repair

From general driveline service to catastrophic failure repairs, our Heavy Equipment Technician (HET) and Red Seals certified diesel mechanics are driveline experts.

See more about Driveline Repair>

Engine Repair, Overhaul & Rebuild

Every day that your truck is in the shop is a day that you aren’t on the road, making money. Onsite Truck & Equipment Repair knows and understands the importance of getting repairs done quickly, correctly and affordably. No job is too big or too small for our experienced team.

See more about Engine Repair, Overhaul & Rebuild>

Exhaust & Aftertreatment

Exhaust issues can lead to decrease in power, acceleration, and fuel economy. They'll often sound bad but their outcomes can be even worse. Be sure to have your exhaust serviced regularly to avoid potential problems.

See more about Exhaust & Aftertreatment>


No job is too big or too small for our experienced team. We can take care of everything from a simple body repairs to more complex problems such as issues with the brakes, fuel injection system, clutch, or transmission.

See more about Maintenance>

Suspension Repair

Regular wear and tear on your suspension makes it hard to get where you need to go and puts the integrity of your vehicle at risk. We get you aligned and back on the road with little downtime.

See more about Suspension Repair>

Transmission & Clutch Repair

While clutch designs vary depending on light, medium, or heavy-duty applications, they all break down and get worn eventually. Getting them serviced regularly keeps you safe and secure on the road.

See more about Transmission & Clutch Repair>

Our Light-Duty Pickup Truck Repair Services

Select a service from the list below to see more information:

A/C Repair

Recharge, repair, and get your A/C pumping back at full capacity.

See more about A/C Repair Services>

Brake Repair

Not as sexy as a turbo but just as important. Callipers, pads, full service.

See more about Brake Repair Services>

Coolant System Repair

Proper maintenance saves money. Ensure your coolant is running right.

See more about Coolant System Repair Services>

Diesel Diagnostics

Our mechanics use the best tools on the market to ensure accurate readings.

See more about Diesel Diagnostics Services>

EGR & DPF Aftertreatment Cleaning

Downtime can be costly — we get it. Our services fix problems, permanently.

See more about EGR & DPF Aftertreatment Cleaning Services>

Electrical Repair

Ground wires, batteries, ECMs: well figure out your electrical issues.

See more about Electrical Repair Services>

Engine Repair & Rebuild

Rebuild, repair, or replace? We'll help you find the right answer for your truck.

See more about Engine Repair & Rebuild Services>

Fuel System Repair

A properly maintained fuel system is essential to top performance.

See more about Fuel System Repair Services>

General Maintenance

Pay small bills now and save on the big bills later. Full inspection service available.

See more about General Maintenance Services>

Oil & Fluid

Keeping your fluids maintained is essential to the proper function and longevity of your vehicle.

See more about Oil & Fluid Services>

Suspension Repair

Custom suspension installs and suspension repair is one of our specialties.

See more about Suspension Repair Services>

Transmission Repair

A small amount of maintenance work now can pay off huge in the future.

See more about Transmission Repair Services>

24/7 Road Services

We provide reliable emergency roadside assistance services. Our team has extensive knowledge and a broad reach throughout Arizona.

24-Hour Service Available.
Experienced Team. Fleet Discounts.

See Roadside Service InfoCall (602) 978-2555

Mobile Fleet Repair

Our mobile fleet repair services help companies to reduce driver downtime, lower total cost of ownership, and increase response times.

Fleet Discounts.
Scheduled Services.

See Mobile Fleet Repair InfoCall (602) 978-2555

Contact Onsite Truck & Equipment Repair Today!

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Our Mission

To provide an outstanding value in truck repair and fleet service through comprehensive maintenance and high-quality repair at fair prices.
Certified mechanic fixing truck


Our truck mechanics do major and minor repairs on trucks, trailers, fleet vehicles, equipment, and RVs, along with pre-scheduled preventive maintenance (at our shop or your location) and DOT annual inspections. With 24-hour road service and tailored fleet service, we’re here for you when you need us, and so you don’t. We’ll come to you in the event of a breakdown and work to get you back on the road fast, and we personally tailor maintenance services to prevent breakdowns from occurring in the first place.

If it’s big, if it’s loud, if it’s diesel, we can fix it!

  • 24/7 Road Service
  • Afterhours Maintenance
  • Alignment
  • Brake Repair & Service
  • Diesel Mechanics
  • Emergency Road Service
  • Fleet Maintenance
  • Fleet Repair
  • Forklift Repair
  • Heavy-Duty Truck Repair
  • Light & Medium-Duty Truck Repair
  • Mobile Service
  • RV Repair
  • Trailer Repair
  • Transmission Repair
  • Truck Oil Change
Learn More


As a family-owned business, we care about the team that works for us, and, in turn, our mechanics and staff care about providing high-quality service to our customers. Whether you’ve been a loyal customer for years or you’re passing through, our goal is to go above and beyond your expectations for truck repair and fleet service. We take pride in being up-to-date and keeping a clean shop, always, and making sure you’re comfortable while you’re here with refreshments and free Wi-Fi. If there’s ever anything we can do to make your visit with us better, please let us know.

Coffee Cup
Coffee & Refreshments
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Free Wi-Fi
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Pick-up &
Drop-off Service
Key Drop Off
24 Hour
Key Drop


Our truck repair facility is conveniently located at 2830 West Osbourn Rd in Phoenix, AZ, off Interstate 17. It’s a commercial, industrial area that’s very busy, so it works well for us and our customers. We’re proud to serve the entire Phoenix metro area, including Tolleson, Glendale, Tempe, Mesa, and Scottsdale. If you’re looking for a high-quality, dependable truck shop in Phoenix, we hope you’ll give us a call.

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Diesel Industry Articles

From industry updates to tech insights, keep up to date with the latest diesel news and all things truck & equipment repair.

Contact Onsite Truck & Equipment Repair Today!

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Vehicles We Service & Repair