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Josias Auto Service LLC handles comprehensive gas and diesel fleet truck repair and maintenance for roofing contractors and other businesses that depend on reliable work vehicles to get the job done. Your trucks are the backbone of your operation — they haul equipment, transport crews, and keep your business moving from one job site to the next. When one of them goes down, the ripple effect can impact your entire schedule. We offer the mechanical expertise and fast service turnaround that fleet owners need to keep every vehicle road-ready.

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Services Covered

Brakes

Full brake inspections, pad and rotor replacement, caliper service, and brake fluid flushes to keep your trucks stopping safely under load.

A/C Service

Refrigerant recharge, compressor diagnosis, and A/C system inspections to keep your drivers comfortable on long summer days in the Texas heat.

Engine Diagnosis

Check engine light diagnostics, fault code reading, and performance troubleshooting for both gas and diesel engines to identify problems before they become major repairs.

Tune-Ups

Spark plug replacement, air and fuel filter service, and fuel system cleaning to restore power, efficiency, and reliability to your truck’s engine.

Suspension Repairs

Shocks, struts, ball joints, tie rods, and other alignment-related suspension components — critical for trucks that carry heavy loads on rough terrain.

General Maintenance

Oil changes, coolant and fluid checks, belt and hose inspections, and tire care to keep your fleet running smoothly between major service intervals.

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Keeping Your Fleet Moving

The most expensive repair is the one you didn’t see coming. Proactive, scheduled maintenance is the single best way to protect your investment in your fleet and avoid the costly breakdowns that sideline a truck for days at a time. A missed oil change, worn brake pads, or a slow coolant leak can each escalate into a major repair — or worse, leave one of your drivers stranded on the side of the road. At Josias Auto Service, we help you stay ahead of those problems with thorough inspections and honest recommendations every time your truck comes in. We treat your fleet the way you’d want your own vehicle treated.
We service both gas and diesel trucks. Contact us with your vehicle’s year, make, model, and mileage for a repair or maintenance estimate tailored to your fleet.

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Schedule Maintenance

Don’t wait for a warning light to bring your trucks in. Get ahead of wear and keep your fleet on the road where it belongs. Contact us to schedule service or to ask about a maintenance plan for multiple vehicles. You can also visit our contact page to send us a message directly. We’re located in Seguin, TX and proudly serve roofing contractors, construction companies, and small business fleet owners throughout the region.