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Car Auto Repairs of Texas

San Marcos, Hays County

Best Diesel Truck Repair in San Marcos, Texas

Quick answer

For fast, honest diesel truck repair in San Marcos, call 469-402-3923. Typical cost: $150 – $5,000+ depending on repair. Our ASE-certified technicians offer same-day appointments, written estimates, and a 12-month / 12,000-mile warranty — open 8 AM to 11:45 PM daily.

Same-day appointments, typically within 2–4 hours

Call 469-402-3923

Duramax, Power Stroke, Cummins — diesel diagnostics and repair. The inspection focuses on diesel diagnostics, fuel injector service, turbocharger repair. For drivers in San Marcos, including Texas State University and Downtown Square and Aquarena Springs, note when the symptom starts and whether it changes during your usual journey.

Diesel & Pickup Truck Repair for San Marcos drivers

Texas runs on trucks. We diagnose and repair diesel and gas pickups — Ford Power Stroke, GM Duramax, Ram Cummins — including injectors, turbochargers, DEF and DPF systems, EGR valves, and glow plugs.

Car Auto Repairs of Texas serves San Marcos drivers from Texas State University, Downtown Square, Aquarena Springs and across ZIP codes 78666. Whether you drive a commuter sedan, a family SUV, or a work truck for your business, we handle diesel truck repair for personal and fleet vehicles throughout Austin & Central Texas.

Inspection in focus

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Illustration of a technician using a diagnostic scanner

Computer diagnostics

A fault code identifies a system to investigate, not necessarily a part to replace.

Illustration of a battery tester connected to car battery terminals

Battery testing

Battery testing is one part of investigating starting and charging concerns.

Illustration of a technician inspecting a vehicle on a lift

Hands-on inspection

A hands-on inspection helps connect the driver's symptoms with the vehicle's condition.

Illustrative images, not customer repair photographs.

What's included in our San Marcos diesel truck repair

  • Diesel diagnostics
  • Fuel injector service
  • Turbocharger repair
  • DEF, DPF, and EGR system repair
  • Diesel oil and fuel filter service

Diesel Truck Repair cost in San Marcos, TX

$150 – $5,000+ depending on repair

Prices vary by year, make, and model. You'll get a written estimate before any work starts.

Diesel Truck Repair in San Marcos: common questions

Diesel Truck Repair in San Marcos typically costs $150 – $5,000+ depending on repair. Your exact price depends on the vehicle; Car Auto Repairs of Texas provides a written estimate first.

Car Auto Repairs of Texas serves San Marcos and nearby Texas State University and Downtown Square with ASE-certified technicians and same-day appointments. Call 469-402-3923.

Usually, yes. Same-day appointments, typically within 2–4 hours, and we're open until 11:45 PM every day.

Usually excess fuel from leaking injectors, a clogged air filter, or turbo problems.

The particulate filter needs regeneration or cleaning. Ignoring it can cause limp mode.

Typically every 15,000–30,000 miles — more often with heavy towing.

Diesel Truck Repair near San Marcos neighborhoods

Diesel Truck Repair in nearby cities

Other auto repair services in San Marcos

Learn more about diesel & pickup truck repair · All San Marcos services

Helpful diesel truck repair guides

Diesel Truck Maintenance Tips for Texas Drivers

Keep your Power Stroke, Duramax, or Cummins healthy in Texas heat and towing.

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Book diesel truck repair in San Marcos today

Call now for a free quote and same-day service across Texas.

Call 469-402-3923