Mobile General Truck Repair Services in Manassas, VA

Mechanic doing repair of a heavy duty diesel truck at K&L Auto and Diesel Repairs

You’ve invested a lot of time and money into your diesel truck and the last thing you need is an unexpected breakdown or your truck being tied up in a shop for a lengthy, and costly, repair. At K&L Auto and Diesel Repair, we understand how important it is that your vehicle is in top-performing condition. We offer mobile diesel truck repair that you can rely on to quickly perform efficient repairs to get your vehicle back on the road. K&L Auto and Diesel Repairs Is the answer you’re looking for when it comes to diesel truck repair in Manassas, VA.

You can rely on the certified mechanics at K&L Auto and Diesel Repairs To have the ability to fix just about anything on your diesel truck.  Our team works tirelessly to ensure we've covered every aspect of your vehicle's diagnostic, service and repair. We do so with timeliness and quality workmanship at front of mind. With K&L Auto and Diesel Repair, you have access to the industry’s best mechanics who can execute any repair job your truck may require.

We know that unexpected breakdowns and lengthy repairs equal lost revenue.  Our general diesel truck repair services cover everything your truck needs to handle both preventative and emergency repairs. We take pride in making sure that your diesel trucks continue to be assets to you rather than financial burdens, which is why you can always expect industry-leading service, quality diesel repairs, approachable customer service and honest assessments of your truck’s repair needs.

Our mechanics come to you and our mobile units are designed to perform a full assessment and diagnostic on your truck.  We collaborate with you and use the data collected to provide the best advice on how to quickly and reliably repair your vehicle. When working with K&L Auto and Diesel Repairs You can be assured that our mechanics will keep you up to date on the service and repair of your vehicle, so there are never any surprises. We leverage our experience in tandem with sophisticated computerized diagnostic tools and convenient mobile service to find the best way to get your diesel truck to perform at the top of its potential.

We offer:

Axle Repair

Your axle should be monitored for misalignment and straightened from time to time in order to ensure that your truck is operating as efficiently as possible. At K&L Auto and Diesel Repair, you can rely on our certified technicians to maintain your truck’s axle so that you can enjoy a smoother ride and your vehicle will have a longer lifespan.


Brakes serve an essential function in diesel trucks and are arguably one of its most important aspects for their direct impact on cargo and driver safety. At K&L Auto and Diesel Repair, we provide comprehensive mobile brake service for your vehicle.

Coolant Systems

The coolant system is perhaps one of the most overlooked components in a diesel engine when it comes to preventative maintenance. In this regard, they are uniquely susceptible to various issues, many of which can be critical for the proper functioning and performance of a vehicle.

Diagnostics & Electrical

In diesel trucks, electrical problems can be attributed to a variety of things. Incorrect installation, overloads and poor insulation are among the most common culprits for major issues pertaining to a truck's battery and operational functions. Our mobile diagnostics and electrical repairs can help you keep your heavy-duty truck running properly no matter how much these components are pushed to the extremes.

DOT Inspections

The DOT mandates certain thresholds to be met when it comes to the condition and operation of a heavy-duty vehicle. This is something that can be done with the expertise of a qualified technician, who can conduct an assessment of your vehicle to ensure everything is up to standard.


The driveline is a complicated component of your truck. Given the power that's generated by diesel engines, there are many factors that can affect their performance. Cables, differentials and other components are frequently subject to wear and tear, which can cause problems in terms of handling, speed and acceleration. This is thus something that requires consistent upkeep, which can be handled at K&L Auto and Diesel Repairs through the likes of our mobile driveline service.

EGR & DPF Services

Your truck’s EGR and DPF systems are essential components for proper engine emission control.  Regular maintenance is important to assure correct engine function and proper emission compliance. Although they do reduce emissions, these systems often put a strain on your engine and, especially if not maintained, can reduce the lifespan of your diesel truck.

Engine Repair

The engine of a truck will need to be repaired at some point. Whether it's due to an accident or extensive wear and tear, this is something that should only be carried out with the help of technicians who are trusted professionals within their field. Our expert mobile technicians can assess and determine the best course of action for your diesel truck’s engine.

Exhaust Systems

A cracked or rusted exhaust system is not just annoying but can have serious implications for the fuel economy of your truck in addition to being a risk in regards to its safety. Anyone who would operate a vehicle in this sort of condition should look into having it repaired by professionals such as ours as soon as possible.

HVAC System

The AC system, also known as the heating, ventilation and air conditioning system of your truck, can be adversely affected by a range of problems. This is especially the case when dealing with older vehicles that may have parts that are more prone to breakdown or failure. The professional technicians at K&L Auto and Diesel Repairs will come to you and assess and repair these issues as quickly as possible.

Oil & Fluid

Regularly changing the oil and other fluids in your vehicle is a task that should be done by technicians who can do so while meeting manufacturer specifications. Any problems with your engine, brake or transmission systems are often best addressed through routine oil changes which will help you monitor for leaks or damage to these poorly visible parts of your truck. The professionals at K&L Auto and Diesel Repairs can help you not only with these oil changes but a wide range of other mobile vehicle services as well.


The various components that make up your diesel truck’s suspension system need to be regularly assessed and monitored in order to ensure their safety and reliability, which can be best done by a professional mechanic. Our experts will take the time to explain the benefits of these options to you so that you can determine what suits your needs best.


Flat tires can be a serious interruption to your work, but more importantly, a flat tire can be a serious threat to your safety on the road. You need a professional diesel mechanic to determine the best plan of action for repairing or replacing your tires. Every member of the team at K&L Auto and Diesel Repairs takes great pride in the fact that we have the capability to service any tire issue, regardless of its severity.

Transmission & Clutch

The transmission of your truck is one of the most important parts of its internal functioning. They can require a number of services ranging from new transmission installation to its removal, diagnosis identification of shifting problems, replacement of various parts such as sensors, filters, solenoids or gaskets, repairs using fully compatible OEM parts, rebuilding and more. We at K&L Auto and Diesel Repairs offer a number of options through our mobile service that will help you assess, maintain and repair your truck's transmission system.

Contact Us

K&L Auto & Diesel Repairs is a mobile-only truck & equipment repair service operating Monday through Friday from 9am-6pm. Our service area is within a 25-mile radius around Manassas, VA. We also offer after-hour and weekend service by appointment.
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Mon-Fri: 9am-6pm
Sat-Sun: Appointment only
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