Top-Quality Auto Repair Services in Illinois

Providing quality repairs with family-owned care since 1996, J&R Service Center values every customer like one of our own.

Testimonials

Our Reviews

Reviews Double Quote Icon | J&R Service Center
Reviews Stars Rating Icon | J&R Service Center

"This shop went above and beyond to make sure my vehicle was safe and running the way it should. I will be forever grateful for the honest work they did and at a very fair price. I recommend them to anyone. Even if you have to drive out of your hometown. They are worth it."

by Amber Berg

Reviews Double Quote Icon | J&R Service Center
Reviews Stars Rating Icon | J&R Service Center

"Our alternator went out on the way to Chicago and we ended up stopping by. They were able to fit us in same day and were able to fix it for us at a reasonable price. Very friendly customer service and I felt like I was in good hands!"

by Janus Esclair

Reviews Double Quote Icon | J&R Service Center
Reviews Stars Rating Icon | J&R Service Center

"Best auto repair/tow shop ever! The lengths they went to help me out was incredible. Hard to find people that are this great anymore. Lucas even gave me rides to and from my hotel due to my car being down. Do yourself a favor and call no other shop around!"

by Hunter Lien

Get to Know Us

About J&R Service Center

Family-Owned Since 1996

At J&R Service Center, we’ve proudly provided quality repairs and honest service to Diamond, Gardner, and surrounding communities since 1996. Founded by Jeff Lee, a Master Technician by age 21, our shop quickly earned a reputation for getting the job done right the first time. Our family-owned roots and commitment to treating every customer like family remain the foundation of our business today.

Two Locations, One Commitment to Excellence

With two convenient locations—Diamond specializing in general auto repair and Gardner offering both complete auto repair and medium- to heavy-duty truck services—we’re equipped to handle everything from personal vehicles to commercial fleets. Whether you need routine car maintenance, diesel diagnostics, heavy-duty towing, or emergency roadside assistance, you’ll receive the same trusted service and expert care at both locations.

ASE Badge | J&R Service Center

A Legacy Built on Quality and Trust

What started as a small two-bay shop in Gardner has grown into a trusted multi-location service center known for solving problems others can’t. Since 1996, J&R Service Center has built a reputation for honesty, friendly service, and quality repairs that stand the test of time. Many of our original customers still rely on us today, a reflection of the lasting relationships and trust we've earned over the years. We are proud to still offer the same personal service that helped build our foundation.

Committed to Our Community

Supporting our community has always been at the heart of what we do. We proudly sponsor local sports teams, participate in food drives, and donate to area fundraisers and charities. When you choose J&R Service Center, you're not just choosing expert auto repair—you’re supporting a local business that gives back to the community it calls home. We believe strong communities are built by businesses that care beyond the doors of their shop.

What We Do

Automotive Services

Expert Auto Service in Illinois

Brake System Repair

Keep your vehicle safe and responsive with expert brake system repair, essential for maintaining control and reducing stopping distances in any driving conditions.

Visit Page

Heating & Air Conditioning

Ensure year-round comfort and clear visibility with professional heating and A/C services, vital for safe driving during extreme temperatures and weather changes.

Visit Page

Transmission Install & Rebuild

Protect your vehicle’s performance and longevity with precise transmission install and rebuild services, critical for smooth shifting and reliable power delivery.

Visit Page
ASE Badge | J&R Service Center
36 Month / 50K Mile Warranty | J&R Service Center

Why Choose Us

Benefits and Amenities

Experience, Trust, and Quality You Can Count On

At J&R Service Center, we combine decades of hands-on experience with a commitment to honest service and high-quality repairs. Our ASE Certified Master Technicians take pride in delivering reliable results backed by a 3-year/50,000-mile warranty, ensuring your confidence every time you visit.

01

Honesty in Every Repair

Clear, trustworthy service every time.

02

Commitment to Quality

Repairs done right for lasting results.

03

Respect for Every Customer

Every customer and vehicle matters to us.

Brands We Work On

Domestic, Asian, and European Vehicle Service

Trusted Auto Care Experts in Illinois

At our Diamond, IL location, we specialize in comprehensive automotive repairs for passenger vehicles. From oil changes to complex diagnostics and repairs, our ASE Certified Master Technicians have the experience and training to keep your car running at its best. We welcome vehicles of all makes and models and offer a full range of maintenance and repair services tailored to your needs.


Our Gardner, IL location focuses on medium and heavy-duty trucks, offering specialized services including 24-hour mobile truck repair. Whether you operate a single commercial vehicle or manage an entire fleet, we provide the expertise, equipment, and dedication to keep your trucks performing reliably on the road.

Book Service Now

Tips & News

Auto Repair Tips and Insights

Helpful tips and advice from J&R Service Center

Truck Diagnostics | J&R Service Center
April 29, 2025
Protect your trucks with expert diagnostics at J&R Service Center in Illinois. ASE Certified Master Technicians and advanced equipment. Visit us today for service!
Oil Changes | J&R Service Center
April 29, 2025
Protect your engine and save money with regular oil changes at J&R Service Center in Illinois. Expert service by ASE Certified Technicians. Visit us today!
Top Signs You Need Brake Repair | J&R Service Center
April 29, 2025
Learn the top signs your brakes need immediate repair from J&R Service Center in Illinois. Expert service, ASE Certified Master Technicians, and trusted local care.
Truck Diagnostics | J&R Service Center
April 29, 2025
Protect your trucks with expert diagnostics at J&R Service Center in Illinois. ASE Certified Master Technicians and advanced equipment. Visit us today for service!

Questions & Answers

Frequently Asked Questions

  • Can I book an appointment online?

    Yes, scheduling an appointment online is easy and convenient, helping you reserve a time that works best for your busy schedule.

  • Where are you located?

    You can visit us at either of our convenient locations: 1100 E Division St in Diamond, IL, or 219 Liberty St in Gardner, IL.

  • What vehicles do you work on?

    We service a wide range of domestic, Asian, and European vehicles, ensuring expert repairs and maintenance for both everyday drivers and heavy-duty trucks.

  • What are your business hours?

    J&R Service Center is open Monday through Friday from 8:00 AM to 5:00 PM, providing reliable auto repair and maintenance services throughout the workweek.

  • Do you offer any discounts?

    Yes, we offer seasonal specials and service discounts; be sure to check our Coupons page for the latest deals available at J&R Service Center.

  • Are you hiring?

    We’re always looking for skilled, motivated individuals to join our team—visit our Careers page to see current openings at J&R Service Center.

Get Directions

Auto Repair Shop Near Me

Trusted Car Repair and Maintenance in Illinois and Surrounding Areas

Located in Diamond and Gardner, IL, J&R Service Center proudly serves as your reliable destination for expert automotive and heavy-duty truck repairs. Whether you need routine maintenance for your car or specialized mobile truck services, our skilled ASE Certified Master Technicians are here to deliver outstanding care backed by a 3-year/50,000-mile parts and labor warranty.

Our convenient locations make it easy for drivers across Grundy County and surrounding areas to access trusted, family-friendly automotive services.

  • Diamond
  • Wilmington
  • Verona
  • Reddick
  • Minooka
  • Rockdale
  • Gardner
  • Braceville
  • Mazon
  • Campus
  • Morris
  • Elwood
  • Coal City
  • South Wilmington
  • Essex
  • Symerton
  • Emington
  • Manhattan
  • Braidwood
  • Dwight
  • Godley
  • Channahon
  • Kinsman
  • Joliet