Working Hours
  • Mon 7:30AM - 5:00PM
    Tue 7:30AM - 5:00PM
  • Wed 7:30AM - 5:00PM
    Thu 7:30AM - 5:00PM
  • Fri 7:30AM - 5:00PM
    Sat Closed
  • Sun Closed
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815-399-2886 | 3427 E State St Rockford, IL 61108

Diesel Engine Repair

Hardworking or just hard at play, TJ's Auto Center Inc services diesel trucks and jeeps from manufacturers such as GM, Chevy, Dodge, Ford and more. We also specialize in diesel engine repair for DuroMax, Power Stroke and Cummins.

Popular Brands We Repair and Service

  • Dodge Diesel
  • Ford Engines
  • DuroMax
  • Mercedes
  • Isuzu
  • Cummins
  • Power Stroke
  • GM Diesel Light Duty
  • Chevy

Choose TJ's Auto Center Inc For Your Truck's Next Diesel Service

Read our reviews and see for yourself that we provide the best, most convenient diesel engine services near you at affordable prices. Come into our repair shop in Rockford today and experience the unmatched expertise of our pro diesel mechanics. Our 5-star reviews make us one of the most recommended diesel repair shops in Rockford!

Discover More About Engine Repair Services At TJ's Auto Center Inc in Rockford

Undercar Services: Maintenance
4X4 Services
Transmission Repair Services


What Our Customers Are Saying

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The business always does a great job and takes care of him. They are very polite.

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We brought an older Buick my son drives...it needed a new sensor..we called at 9am; it was towed in and fixed by 3!

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Dependable, caring. We have confidence in the work TJ's does with our family's vehicles.

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Going to Tjs is a real delight. I have been a regular customer since I moved to Rockford 4 years ago. You can't go wrong at Tj's!!

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I always trust the advice and service I receive.

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As always, no complaints on my visit. All my questions were answered in detail.

  • ACDelco
  • ASE (Automotive Service Excellence)
  • Rockford IL
  • Wix
  • Walker
  • Champion
  • Moog
  • Gates
  • Monroe
  • TECH-NET Professional Auto Service - Trans
  • Car Care Aware
  • Call Us For Service: 815-399-2886