Truck Repair San Antonio That Keeps Freight Moving
TruckMasters provides dependable truck repair in San Antonio TX for owner-operators and fleets that need fast diagnosis and correct fixes with minimal downtime.
Full-Scope Truck Repair Services in San Antonio TX
Mechanical issues rarely arrive alone. That is why our technicians address root causes. We don’t stop at resolving surface-level symptoms. Our structured inspection and accurate repair services span:

Engine, Transmission, & Drivetrain Repairs
Restore the power of diesel engines and the reliability of fuel systems, transmissions, clutches, driveshafts, and cooling system components.

24/7 Emergency & Roadside Repairs
Reduce downtime with emergency roadside repair service on a 24/7 basis for breakdowns in San Antonio, TX, along highways, in and around yard facilities and terminals.

Brake and Air System Repairs
Maintain safe stopping and pressure control through service of air brakes, chambers, slack adjusters, valves, hoses, and related components.

Electronic Systems and Computer Diagnostics
Identify and fix faults faster to resolve wiring issues, sensor errors, lighting failures, and charging problems.

Suspension, Steering, and Chassis Repairs
Boost handling, stability, and tire life by repairing shocks, bushings, mounts, kingpins, steering gear, and load-bearing components.

Preventive Maintenance and DOT Compliance
Stay ahead of breakdowns and road-legal with scheduled check-ups, inspections, and fixes to meet DOT standards.

Semi Truck Repair San Antonio TX – Backed by Real Experience
Accurate diagnosis. Solid repairs. Dependable results.
Truck Masters handles the issues that remove semi trucks from service. Brake pressure drops, electrical failures, engine faults, air leaks, cooling issues, and drivetrain wear get direct, system-level attention from our experts.
We follow a clear process: diagnose, repair, verify.
This keeps your rig compliant and reliable on South Texas hauls.
Mobile Truck Repair Capabilities
Onsite support to reduce your truck downtime:
- Engine and fault-code scans
- Brake and air system checks
- Electrical issue inspections
- Suspension and steering reviews
- Cooling leaks & Cooling system pressure tests
- Drivetrain and undercarriage evaluations
- Preventive maintenance services

Truck Inspection and Repair Services Across San Antonio TX
Routine inspections prevent breakdowns before they strand drivers roadside. TruckMasters performs focused inspections that assess braking, suspension, electronic systems, air systems, and engine performance.
When faults appear, we follow proven standards and OEM specifications trusted by fleets operating across San Antonio TX.

Fleet Truck Repair and Maintenance Support
Fleet operations need visibility, consistency, and predictable uptime. TruckMasters provides fleet truck repair and maintenance support in San Antonio TX through structured service, clear reporting, and direct technician access.
We provide:
- Clear repair updates with tech notes
- Documented service histories and inspection records
- Tracked preventive maintenance schedules
- In-depth reporting on brakes, tires, suspension, and electrics
- Organized records for budgeting and planning
- Direct communication for quick approvals
Mobile Semi Truck Repair San Antonio TX– Built for Your Operation
Our mobile units cover San Antonio and nearby South Texas routes, bringing diagnostic tools and repair gear right to you. We tackle engine faults, brake issues, electrical problems, air leaks, cooling woes, and suspension fixes on-site—aiming to skip the tow whenever possible.
frequently asked questions
What type of trucks do you repair in San Antonio, TX?
We repair different types of semi trucks, commercial trucks, fleet vehicles, and diesel-powered units across major mechanical and safety systems.
Do you offer 24/7 truck repair in San Antonio, TX?
Yes. TruckMasters emergency truck repair operates around the clock for roadside and urgent situations.
Can repairs be completed onsite?
Many engine, brake, electrical, air system, and suspension repairs are completed onsite unless shop equipment is required.
Do you use OEM parts for San Antonio truck repair?
Yes. OEM parts support performance standards and long-term reliability.
Do you support fleet truck maintenance programs?
Yes. We provide scheduled maintenance, inspection reporting, and repair tracking for fleets.
Call us with your truck location and issue
Our team reaches you fast and offers mobile truck repair service.
Book a Service
Fill out the form below and Truck Masters’ team will get back to you quickly to assist with your service or repair request.
