Mobile Maintenance Mastery
A veteran-owned mobile auto and diesel service delivering professional, on-site maintenance, repairs, and fleet care throughout Jacksonville and surrounding areas.
Built on Precision and Integrity
OnSitePro Diesel and Auto Maintenance was founded by Delvecchio Maliquk Gladden, a United States Marine veteran committed to bringing dependable, high-quality vehicle care directly to the customer. After serving in the Marine Corps, Delvecchio carried forward the values of discipline, honor, precision, and unwavering commitment to excellence. These principles form the core foundation of OnSitePro and guide every service performed.
With years of hands-on experience in diesel systems, automotive maintenance, and preventative fleet care, Delvecchio recognized a growing issue in the Jacksonville and Onslow County area. Long wait times and shop downtime were costing residents and businesses valuable time. OnSitePro was created to solve that problem by delivering professional oil changes, diesel services, diagnostics, and minor repairs on site. Marine-built, Marine-owned, and driven by a mission-first mindset, OnSitePro provides unmatched reliability and convenience for personal vehicles, work trucks, and commercial fleets.
Gas Vehicle Services
Our mobile gas vehicle services provide fast, reliable maintenance for cars, SUVs, and light-duty trucks. Oil and filter services are designed to extend engine life and improve performance. We also provide minor repairs and inspections to keep your vehicle safe and road-ready.
Oil Change Services
Choose from conventional, synthetic blend, or full synthetic options tailored to your vehicle’s needs. We replace oil filters and top off critical fluids to ensure optimal performance. These services help extend engine life and reduce wear.
Filter Services
Engine air, cabin air, and fuel filter replacements help maintain airflow, improve engine efficiency, and support cleaner driving. We use high-quality filters for long-lasting performance. Proper filtration improves overall vehicle health and longevity.
Battery Services
We provide thorough battery tests to ensure proper voltage and stability. If replacement is needed, we install a new battery on site with professional care. Reliable battery function helps prevent unexpected breakdowns.
Brake and Minor Repairs
From brake pad replacement to windshield wiper installs, we handle a range of small but essential repairs. These maintenance services keep your vehicle safe and your daily driving dependable. Quality parts and skilled service ensure peace of mind.
Diesel Truck Services
We service light, medium, and heavy-duty diesel trucks, providing essential preventative maintenance and high-demand repairs. Diesel vehicles require specialized care, and our mobile service brings that expertise directly to you. Fleet trucks and work vehicles benefit from reduced downtime and improved reliability.
Diesel Oil and Filter Services
We perform diesel oil changes across all duty classes, including multi-filter systems. Proper lubrication is essential for diesel engine longevity and performance. Our service ensures your engine remains protected and efficient.
Fuel and Air Systems
From primary and secondary fuel filters to water separator service, we keep your fuel system clean and functioning properly. Clean air and filtered fuel reduce engine strain and boost efficiency. This is vital for both personal and commercial diesel trucks.
DEF and Lubrication
DEF top-offs and chassis greasing help reduce emissions, protect driveline components, and keep your diesel truck working smoothly. These services are essential for heavy-duty operation.
Diesel Diagnostics
With OBD-II and J1939 and J1708 diagnostic scanning, we identify issues quickly and accurately. Fleet managers receive detailed diagnostic reports. Early detection saves money and prevents major damage.
Fleet Maintenance Programs
OnSitePro keeps fleet vehicles mission-ready with scheduled maintenance, record keeping, and rapid on-site servicing. Our fleet programs reduce downtime, extend vehicle life, and support your business operations. We work with work trucks, vans, diesel fleets, and mixed vehicle fleets.
Preventative Maintenance
Routine oil changes, PM services, and safety checks keep your fleet reliable. These services prevent costly breakdowns and maintain operational efficiency.
Flexible Scheduling
We offer daytime, nighttime, and weekend scheduling tailored to your business needs. Multi-vehicle discounts help reduce fleet maintenance costs.
Fleet Records and Priority Response
Every fleet receives digital service logs and priority scheduling. You can track vehicle history easily, ensuring compliance and performance.
General Minor Repairs and Additional Services
We provide a wide range of small repairs and supplementary services for all vehicle types. These include wiper replacements, belt installations, bulb replacements, and minor electrical fixes. Safety inspections and pre-trip inspections are available for personal and commercial vehicles.
General Minor Repairs
We offer belt replacements, fuse changes, sensor resets, and more. These small repairs prevent larger problems from developing.
Safety and Inspection Services
Non-DMV inspections and pre-trip truck checks ensure your vehicle or fleet stays compliant and safe. This is ideal for work trucks and commercial operations.
Seasonal and Roadside Maintenance
Winterization, work truck packages, and minor roadside repairs keep your vehicle protected in changing conditions. Each service supports long-term reliability.
Why Choose Us
OnSitePro stands apart through a combination of Marine discipline, professional expertise, and unmatched convenience. Our mobile services eliminate the downtime and frustration of traditional shop visits. Every job is completed with integrity, clear communication, and pride in workmanship. We bring advanced diesel diagnostics, quality auto maintenance, and reliable fleet care right to your location. Customers trust us because we operate with honesty, precision, and a mission-first mindset rooted in military values.
Veteran-Owned Precision
Founder Delvecchio Maliquk Gladden brings Marine-level discipline, organization, and attention to detail to every service call. This ensures exceptional standards and reliable results.
Convenience Delivered
We save customers time by performing maintenance and repairs on site. Whether you are at home, at work, or managing a busy fleet, we bring the service to you.
Honest and Transparent Service
Integrity in pricing, clear communication, and pride in workmanship are the pillars of our business. Customers always know what they are getting and why it matters.
Contact Us
Contact OnSitePro today to schedule mobile auto or diesel service that comes directly to you. Whether you need an oil change, diagnostics, minor repairs, or fleet maintenance, we deliver fast, dependable service with the professionalism of a Marine-owned business. Our team is ready to answer questions, set appointments, and help you keep your vehicle or fleet in top condition.
Contact Information:
Email: info@onsitepromaint.com
Phone: 910.397.5405
Business Hours:
Monday through Friday: 7:30 am to 5:00 pm
Off-shift hours available with adjusted rates