Diesel Repair & Diagnostics in San Antonio, TX
From check-engine lights to full after-treatment system repairs — we fix it right the first time.
DPF Resolutions SA is San Antonio's trusted diesel repair shop for medium- and heavy-duty trucks, commercial fleets, and work vehicles. We specialize in diesel emissions systems, DPF/DOC/SCR repair, EGR service, and complete drivetrain diagnostics.
Our Diesel Repair Services
Comprehensive diesel service for every system on your truck
Engine Diagnostics & Repair
Accurate diagnosis and repair of diesel engine performance, drivability, and reliability concerns.
Emissions System Repair
Diagnostics and repair of DPF, EGR, DEF, SCR, and aftertreatment systems.
Electrical Diagnostics & Repair
Advanced troubleshooting and repair of sensors, wiring, and electronic systems.
Preventative Maintenance
Scheduled maintenance services designed to maximize uptime and extend vehicle life.
Turbo & Performance Service
Repair and replacement of turbochargers and related performance system components.
Drivetrain & Transmission Service
Inspection, repair, and maintenance of transmissions and drivetrain components.
Fuel & Air System Service
Inspection, repair, and maintenance of fuel delivery, intake, and filtration components.
Cooling System Repair
Service for radiators, water pumps, thermostats, and cooling system components.
Brake, Steering & Suspension
Service and repair of braking, steering, and suspension system components.
Industries We Serve
Diesel Problems Fixed Right.
At DPFR, we do more than DPF service — we provide complete diesel repair solutions.
From advanced diagnostics and check engine lights to emissions systems, fuel systems, turbochargers, maintenance, and major repairs, our experienced team is committed to keeping South Texas diesel trucks operating at their best.
Whether you drive a Power Stroke, Duramax, Cummins, fleet vehicle, medium-duty truck, or work truck, you can count on us for reliable service and honest recommendations.
- Specialists in DPF, DOC, SCR, EGR, and DEF systems
- Advanced diagnostics for all major diesel platforms
- OEM-quality parts and procedures
- Fleet accounts and volume pricing available
- Pick-up and drop-off service for fleet customers
DPFR — Diesel Problems Fixed Right.
Our Repair Process
Transparent, step-by-step from drop-off to pick-up
Drop Off or Schedule
Bring your truck in or call ahead to reserve a bay. We also offer pick-up for fleet accounts.
Full Diagnostic Scan
We run a comprehensive scan across all modules — engine, transmission, emissions, and more.
Transparent Estimate
You get a clear, itemized estimate before any work begins. No surprises.
Expert Repair
Our diesel technicians perform the repair using OEM-quality parts and proven procedures.
Verified & Road-Ready
We verify the repair with a post-service scan and road test before returning your vehicle.
Get Your Diesel Running Right
Whether it's a warning light, a derate condition, or a full breakdown — bring it to DPF Resolutions SA and we'll get you back on the road.