Heavy-Duty Truck & Trailer Repair in San Antonio
Full-service diesel shop, mobile roadside assistance, and fleet maintenance programs that keep your trucks moving across San Antonio and beyond.
- Fast scheduling and quick-turn heavy-duty repairs
- Full in-shop, roadside, and towing support in one place
- Fleet-friendly communication, scheduling, and billing
When a truck is down, revenue stops. Texas Truck & Trailer Repair provides complete heavy-duty truck, trailer, and equipment repair from our Converse, TX shop, plus mobile roadside assistance and towing when you can’t make it in. We help local fleets, owner-operators, and equipment owners cut downtime, stay DOT-compliant, and keep loads moving.
General Diesel Truck Repair - Trailer Repair & Maintenance - Emergency Roadside & Towing - Fleet Maintenance & Inspections - Engine, Drivetrain & Transmission - Brakes, Suspension & Steering - Electrical & Diagnostics - RV, Bus & Heavy Equipment Repair -
What We Fix and Service
Whether you run one truck or a full fleet, you need a repair partner who can handle everything in one stop. Our diesel technicians diagnose and repair heavy-duty trucks, trailers, buses, RVs, and equipment with the right tools, parts, and experience to get you safely back on the road.
General Diesel Truck Repair
From check-engine lights to drivability issues, we perform complete diesel truck diagnostics and repair on Class 6–8 trucks and vocational vehicles. We track down the root cause instead of just clearing codes.
Trailer Repair & Maintenance
We repair brakes, lights, suspension, landing gear, doors, and electrical on dry vans, flatbeds, utility, and equipment trailers. Keep your trailers safe, legal, and ready for the next load.
Emergency Roadside & Towing
Stuck on the side of the road? Our team provides mobile roadside service and coordinates towing to our shop when needed. Call us for breakdowns, no-starts, blowouts, and other road emergencies.
Fleet Maintenance & Inspections
We build maintenance programs around your routes and schedules to keep trucks on the road and out of the shop. PM services, inspections, and repair tracking help you control costs and avoid surprise downtime.
Engine, Drivetrain & Transmission
We handle everything from minor engine repairs to overhauls, drivetrain issues, clutches, and transmissions. Our goal is to restore power, reliability, and fuel efficiency so your trucks can keep earning.
Brakes, Suspension & Steering
Safe stopping and stable handling are non-negotiable. We service brake systems, air lines, suspension components, bushings, and steering issues to keep your drivers confident and compliant.
Electrical & Diagnostics
Modern trucks depend on complex electrical and electronic systems. We use advanced diagnostics to troubleshoot warning lights, starting/charging issues, sensors, aftertreatment systems, and more.
RV, Bus & Heavy Equipment Repair
Have an RV, bus, or piece of heavy equipment down in or near San Antonio? Our technicians repair many popular diesel-powered RVs, buses, and off-road machines to keep your trips and jobs on track.
Truck Repair
Texas Truck and Trailer Repair provides full-service heavy-duty truck and trailer repair to keep owner-operators, fleets, and working vehicles safe, compliant, and on the road. Whether you come into the shop or need help getting rolling again, our technicians focus on fast troubleshooting, clear recommendations, and repairs done to withstand real-world loads, heat, and miles.
We perform complete diesel truck diagnostics and repair on Class 6–8 trucks and vocational vehicles. We track down the root cause instead of just clearing codes.
From check-engine lights and electrical faults to braking issues, air leaks, and wear-and-tear items, we diagnose the root cause and prioritize the repairs that get you back to service with confidence. If you’re managing a fleet, we can help reduce downtime with preventive maintenance and repair planning that fits your routes and schedules.
Emergency Roadside Service & Towing
When a truck or trailer fails on the road, every minute matters. Our emergency roadside service team is ready to help with mobile diagnostics and repair in the San Antonio area, and we can coordinate towing to our shop when repairs can’t be safely completed on-site. One call gets you moving toward a solution instead of waiting for multiple vendors.
- Mobile diagnostics for no-starts and breakdowns
- Tire, wheel, and minor mechanical repairs on the roadside when conditions allow
- Coordination of towing to our facility for major repairs
- Support for trucks, trailers, RVs, and some equipment
- Clear communication with drivers and dispatch throughout the process
If you’re dealing with a “diesel repair near me” emergency search on the side of the road, call our team first. We’ll help you figure out the fastest and safest path to get that unit back in service.
Fleet Maintenance Programs
Fleets need more than one-off repairs. They need a partner who understands routes, utilization, and downtime costs. We work with local and regional fleets in and around San Antonio to build preventive maintenance programs that fit your schedule and compliance requirements.
- Custom PM schedules based on mileage, hours, and duty cycles
- Oil changes, filters, fluids, and inspections in one appointment
- DOT and safety checks to help you stay ready for inspections
- Priority scheduling for established fleet customers
- Clear estimates, approvals, and invoicing for your office
Our goal is simple: fewer roadside surprises, fewer missed loads, and trucks that pass inspections the first time. Ask us about setting up a fleet maintenance plan for your operation.
Trailer Repair & Maintenance
Your trailers work just as hard as your trucks. Neglected brakes, lights, or suspension can lead to violations, breakdowns, and unsafe conditions. Our team performs complete trailer repair and maintenance to keep your assets safe and productive.
- Brake system repair, air lines, and chambers
- Suspension components, bushings, springs, and axles
- Lighting, wiring, and electrical troubleshooting
- Doors, hinges, seals, and flooring repairs
- Preventive inspections between long hauls
Whether you run a few flatbeds or a mixed fleet of dry vans and equipment trailers, we help you stay ahead of failures and avoid out-of-service violations.
Engine, Drivetrain & Transmission
Heavy-duty engines and drivetrains are complex systems that demand the right tools and experience. We diagnose and repair issues affecting power, shifting, and reliability so your trucks can keep pulling loads without constant trips back to the shop.
- Engine diagnostics, repairs, and overhauls
- Aftertreatment system and emissions-related repairs
- Clutch replacement and adjustment
- Manual and automatic transmission repair and replacement
- Driveline and differential inspection and repair
If your truck is losing power, shifting poorly, or throwing repeated codes, we’ll help you get to the bottom of it and recommend a practical repair plan.
DOT Inspections & Compliance Services
Staying compliant isn’t optional. We help fleets and owner-operators prepare trucks and trailers for DOT inspections and address issues before they cause fines or downtime.
- Pre-DOT inspection checks on trucks and trailers
- Documentation of defects and recommended repairs
- Corrective repairs to brakes, lights, suspension, and other safety items
- Assistance preparing units for roadside and scale inspections
If your equipment is due for inspection or recently failed one, bring it in and we’ll help you get it back into shape.
Serving San Antonio and South Texas
Texas Truck & Trailer Repair is conveniently located in San Antonio. We support local fleets, regional carriers, and independent owner-operators running through the I-10, I-35, and Loop 1604 corridors.
If you’re searching for diesel repair near me, truck repair in San Antonio, TX, or a mobile diesel mechanic near San Antonio, our team is ready to help. Call us to confirm service options for your specific location, route, and situation.
Why South Texas Fleets Trust Texas Truck & Trailer Repair
We keep the wheels of industry turning in San Antonio. From our heavy-duty shop to our 24/7 roadside assistance trucks, we provide professional diesel repair and trailer maintenance that scales with your business hauling needs. Our mission is direct: maximize your uptime and ensure every rig stays DOT-compliant.
Expert Diesel Repair
Precision diagnostics and engine repairs for Class 6–8 diesel trucks from our Converse, TX facility.
Trailer Maintenance
Complete trailer repair services including brakes, suspension, and structural safety support.
Roadside Assistance
Fleet Maintenance
Dependable mobile diesel mechanic support and emergency roadside service for the San Antonio area 24/7.
Strategic maintenance programs designed to cut downtime and simplify operations for fleet managers.
“We treat every rig like it needs to get back to work—not just back on the road.”
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“Texas Truck & Trailer responded instantly when our rig was down. Their communication was crystal clear, and the roadside repair was handled with professional speed.”
Local Owner-Operator
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“Since partnering with them for fleet maintenance, our downtime has dropped significantly. Their scheduling is dependable and fits our routes perfectly.”
Logistics Fleet Manager
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“Finding an honest shop is tough, but these guys give clear recommendations and fair pricing every time. No surprises, just quality heavy-duty repair.”
Regional Carrier Supervisor
San Antonio’s Reliable Source for Diesel Truck & Trailer Repair
Located in San Antonio, TX, we serve regional fleets and owner-operators with high-speed roadside service and expert in-shop repairs. We focus on getting your equipment back in service quickly with precision diesel truck repair throughout San Antonio.
- 24/7 Roadside Diesel Service
- OTR & Regional Carrier Support
- Class 6-8 Engine Diagnostics
- Full Trailer Brakes & Lights
- Dry Van & Flatbed Repair
- Fleet PM Service Programs
- Construction & Industrial Heavy Equipment
- Mandatory DOT Compliance Inspections
- Emergency San Antonio Roadside Service
Texas Truck & Trailer Repair is your partner for maximizing uptime and minimizing roadside surprises.
Expert Diesel Repair & Roadside Help in South Texas
Texas Truck & Trailer Repair keeps South Texas moving. Whether you need an emergency breakdown service or a scheduled fleet oil change, our San Antonio, TX shop is your one-stop heavy-duty partner.
- 24/7 Mobile Roadside Diagnostics & Towing
- Heavy-Duty Truck Diagnostics & Full Engine Repair
- Comprehensive Trailer Maintenance & Structural Fixes
- DOT Inspection Readiness & Fleet PM Programs