Medium-Duty Truck Repair Services, Denver

When you need affordable medium-duty truck repair services in Denver, call our company. We excel in providing premier medium-duty truck repairs for all major brands and models. 303 Truck Repair knows that when your truck breaks down, it affects your business. So, our skilled technicians provide reliable and durable repairs for your fleet of medium-duty trucks.

Our services cater to box trucks (straight trucks), flatbed trucks, refrigerated (reefer) trucks, utility, and service trucks. By using modern diagnostic tools, our technicians find issues early on, saving you time and money. We use OEM-grade components to ensure durable medium-duty truck repairs. Our expertise includes repairing the following medium-duty trucks:

From brake repairs and engine diagnostics to preventive maintenance and DOT inspections, we have got you covered. Stop searching for medium-duty truck repair near me in Denver with us.

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 Get Expert Service Today | +1 (303) 261-3660

Call Our Emergency Medium-Duty Truck Repair Services in Denver!

Available day or night, our rapid-response mobile mechanics are ready to tackle urgent issues like engine failures or brake issues.

We Offer a Wide Range of Medium-Duty Truck Repairs in Denver

Our team of ASE-certified mechanics provides a wide range of medium-duty truck repairs in Denver. We cater to trucking companies, logistics businesses, moving, and storage companies. The weather in Denver poses specific challenges to medium-duty truck drivers. Here, we have mentioned some common medium-duty truck repairs our team often provides:

Air Brake System Issues

Denver’s terrain puts major stress on your braking system. Air brakes on medium-duty trucks are prone to wear, leaks, and frozen lines in winter. Drivers report reduced brake response or hissing sounds, indicating failing valves or air leaks.


Our technicians inspect, rebuild, and replace air brake components to restore safe stopping power. We also bleed air systems and use high-performance brake pads for lasting performance.

Call Us | +1 (303) 261-3660

Engine Overheating

Medium-duty trucks that haul heavy loads experience overheating. This is especially common in older trucks with clogged radiators, failing thermostats, or underperforming coolant systems.

We conduct complete cooling system diagnostics, including radiator flushes, fan clutch inspections, thermostat replacements, and water pump servicing.

Call Us | +1 (303) 261-3660

Diesel Emission System Failures

Denver’s strict emissions regulations and frequent short-haul trips can trigger diesel particulate filter (DPF) clogs, DEF sensor failures, and check engine lights.

So, our team provides complete emissions diagnostics, DPF cleaning, EGR system repairs, and DEF sensor replacements.

Call Us | +1 (303) 261-3660

Electrical Problems and Sensor Failures

Complex onboard electronics control everything from lighting to engine management. Denver’s winter cold and summer heat can corrode wiring and damage sensors, leading to stalling or trouble starting.

We use advanced diagnostic scanners to pinpoint sensor issues, rewire damaged harnesses, and replace corroded connectors. Our team also offers battery and alternator tests to prevent power failures.

Call Us | +1 (303) 261-3660

Transmission Slippage or Hard Shifting

Many operators drive in stop-and-go traffic or make frequent starts on inclines. This causes automatic and manual transmissions in medium-duty trucks to wear prematurely. Slipping gears, rough shifts, and delayed engagement are all signs of transmission troubles.

Our mechanics rebuild and replace transmissions, check fluid condition, and calibrate shift modules for smooth performance. For fleets, we offer transmission service intervals based on actual workload.

Call Us | +1 (303) 261-3660

1 Medium-Duty Truck Maintenance Services in Denver

We excel in providing medium-duty truck maintenance services in Denver, Colorado. Preventive maintenance is the key to increasing the life of your medium-duty trucks. Our maintenance plans include oil changes, tire rotations, brake inspections, fluid checks, and comprehensive system diagnostics.

Our team customizes maintenance schedules based on your fleet’s usage, ensuring optimal performance for delivery trucks, service vehicles, and construction trucks. By catching issues early, we help you avoid unexpected repairs and keep your trucks compliant with DOT regulations.

Call Now: +1 (303) 261-3660

Services

General Repair
Engine & Drivetrain
Truck & Fleet
Tire & Wheel
Towing & Roadside
Specialized Repairs
Cooling & Heating
Brakes Suspension
Electrical & Diagnostics
Exhaust & Emissions
Fluids & Lubrication
Bodywork & Structural
Fabrication & Welding

24/7 online support

We are Available 24/7

+1 (303) 261-3660

info@303truckrepair.com

Our Portfolio Featuring Medium Duty

  • ASE Certified Medium Duty Mechanics Truck Repair Denver
  • Expert Medium duty Technicians Truck Repair Denver
  • Same Day Medium Truck Repair Denver

FAQs

Repair duration depends on the issue. Simple repairs can take a few hours. Meanwhile, major repairs like transmission or engine work may take a few days.

Yes! We provide scheduled fleet maintenance programs tailored to business needs, including service tracking and preventative care to maximize uptime.

Most medium-duty trucks require servicing every 10,000 to 15,000 miles, depending on usage. Regular maintenance includes oil changes, filter replacement, brake checks, and fluid inspections.

Our medium-duty truck inspection, repair, and maintenance services are available in the following areas: Denver, Sheridan, Boulder, Littleton, Thornton, Highlands Ranch, Westminster, Commerce City, Greenwood Village, Centennial, Englewood, Aurora, Lakewood, Arvada, and Castle Rock.

Client Success Stories

Google Reviews

5 star

5.0 Stars | 728 reviews

Mike Evans

During a hectic delivery route, we needed emergency Medium-Duty truck repairs. Their team arrived quickly, identified the issue, and got us back on the road within hours. Their fast, reliable service is unmatched.

Google Reviews

5 star

5.0 Stars | 728 reviews

Greg Smith

Before a long haul, I scheduled a Medium-Duty truck inspection here. They were thorough, spotting a brake issue I hadn’t noticed. Their attention to detail saved me from potential downtime later.

Google Reviews

5 star

5.0 Stars | 728 reviews

Nick Jones

Routine Medium-Duty truck maintenance has never been easier. Their team ensures every visit is smooth and efficient. They keep our fleet running like clockwork, which is critical for our business.

Google Reviews

5 star

5.0 Stars | 728 reviews

Billy Roberts

We experienced engine trouble and turned to them for Medium-Duty truck diagnostics. They pinpointed the problem quickly and explained the solution clearly. Their skilled team had the truck fixed in record time.

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