Your One-Stop Shop for Powerstroke, Duramax, and Cummins Diesel Service and Repairs!

At Windy City Diesel, we understand the pride you take in your truck—whether it’s a Ford, GMC, or RAM. Our team of diesel specialists is here to provide the high-quality repair and maintenance services you need to keep your rig running smoothly for the long haul.

Power Stroke Services

  • 7.3L, 6.0L, 6.4L & 6.7L Expertise

    From the legendary 7.3L to the modern 6.7L, we’ve got you covered. Our technicians know how to tackle common issues like injector O-ring leaks, EGR cooler failures, and high-pressure fuel pump malfunctions.

  • Advanced Diagnostics

    Say goodbye to guesswork. We use cutting-edge tools to pinpoint hard-to-detect problems with your FICM or turbo actuator, so repairs are fast, accurate, and get done right the first time.

  • Performance Upgrades & Bulletproofing

    Looking to strengthen your 6.0L with head stud upgrades or add reliable horsepower to your 6.7L? We’ll help you customize a solution that boosts reliability and power—without sacrificing drivability.

Duramax Specialists

  • Comprehensive Fuel System Service

    Duramax engines rely on precise fuel delivery. Our pros excel at repairing or replacing injectors, cleaning injector cups, and preventing CP4 pump failures that can damage your entire system.

  • Turbocharger & Cooling Solutions

    Whether you’re dealing with a VGT actuator issue or overheating under heavy loads, we have the parts and expertise to bring your Duramax back to peak condition.

  • Emissions System Support

    Keep your DPF, DEF, and EGR systems operating efficiently. We’ll help you stay on the road and in compliance with all emissions regulations.

Cummins Expertise

  • 5.9L & 6.7L Cummins

    Our technicians know Cummins engines inside out. From KDP (Killer Dowel Pin) fixes in classic 12-valves to advanced diagnostics on modern 6.7Ls, we ensure durability and reliability.

  • Fuel Injection & Lift Pump Upgrades

    Don’t let a failing lift pump or clogged injector hold you back. We install trusted aftermarket solutions to maximize fuel pressure and performance—especially critical in high-mileage or tuned setups.

  • Transmission & Drivetrain

    High-torque engines can put a strain on your transmission. Whether it’s the 47RE, 48RE, 68RFE, or Aisin, our custom rebuilds and preventative maintenance will help you handle all that power without worrying about breakdowns.

Get the Dependability You Deserve

Don’t let injector problems, turbo issues, or emissions-related headaches slow you down. We’ll get your Power Stroke, Duramax, or Cummins back on the road performing at its best—so you can tackle any job or adventure with confidence.

Services for your duramax truck

Early Duramax models (particularly LB7) are prone to injector issues. Symptoms include rough idle, excessive smoke, or reduced fuel efficiency. Regular maintenance, cleaning, and timely replacement of injectors can help avoid damage to the engine and fuel system.

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