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Frentress Repair

"Reliable Repairs. Honest Service. Every Mile."

About Us

Frentress Repair, founded in 2021, is a trusted truck repair shop based in Dunleith Township, IL. Serving Dunleith Township, East Dubuque, Dubuque, Platteville, Cuba City, Stockton, Galena, Freeport, and Dyersville, our skilled team specializes in heavy-duty and medium truck repair. We offer expert oil changes, brake service, suspension work, transmission repair, engine overhauls, radiator service, and reliable on-site service calls to keep your trucks running smoothly. Count on Frentress Repair for dependable, professional service.

Areas Served

What We Offer

Our Services include:

Medium Truck Repair: Keep your medium-duty trucks working at their best with expert diagnostics, repairs, and routine maintenance. We service a wide range of truck systems to help maximize performance and minimize downtime.
Heavy-Duty Truck Repair: Our heavy-duty truck repair services are designed to keep commercial vehicles operating safely and efficiently. From major mechanical repairs to preventative maintenance, we help keep your fleet on the road.
Oil Changes: Regular oil changes help protect your engine, improve performance, and extend the life of your vehicle. We use quality oils and filters to help your truck run smoothly mile after mile.
Brakes: Safe, responsive brakes are essential for every truck. We inspect, repair, and replace brake components to ensure reliable stopping power and enhanced road safety.
Suspension Work: A properly functioning suspension system improves ride quality, handling, and overall vehicle stability. We repair and replace suspension components to keep your truck performing as it should.
Engine Overhaul: When your engine needs more than a simple repair, our engine overhaul services can restore power, reliability, and efficiency. We carefully inspect and rebuild critical components for long-lasting results.
Transmission Work: Transmission issues can impact performance and productivity. We provide comprehensive transmission diagnostics, repairs, and replacements to help keep your truck shifting smoothly.
Radiators: An efficient cooling system is vital for preventing engine overheating. We repair, replace, and maintain radiators and related components to keep your engine operating at the proper temperature.
Service Calls: When you can't make it to the shop, we come to you. Our service call team provides on-site diagnostics and repairs to help get your truck back up and running as quickly as possible.

Testimonials

On 10/24/2025 Slammin Sam had this to say:
I work for a local excavating company and we do a lot of business here. Today I was in a bind with my dump truck and a mechanic name Randy helped me out. I've been driving for 30 years and I've dealt with a lot of diesel mechanics. Randy has great customer service skills and is one of the best mechanics I've seen. I want the owner or owners to know that Randy is huge asset to you're company. Thx for the great service!

On 6/15/2025 Norm Isaacs had this to say:
My ac went out, I have a heart condition. These guys stopped whst they were doing to nake sure I had air. Hats off to them 👏

Contact Us

Frentress Repair
130 Frentress Lake Rd Dunleith Township, IL 61025
Phone: (815) 733-2070
Email: billing@frentressrepair.com

Payment Types Accepted

American Express, Personal Checks, Debit Cards, Discover, MasterCard, PayPal, Visa

Our Hours

Monday: 7:00 AM - 5:00 PM
Tuesday: 7:00 AM - 5:00 PM
Wednesday: 7:00 AM - 5:00 PM
Thursday: 7:00 AM - 5:00 PM
Friday: 7:00 AM - 5:00 PM

FAQ

What types of trucks do you service?

We provide repair and maintenance services for medium-duty and heavy-duty trucks. Whether you operate a single work truck or manage a fleet, our team can help keep your vehicles running reliably.

How often should I bring my truck in for maintenance?

Maintenance schedules vary depending on vehicle usage and manufacturer recommendations. Regular inspections and routine services can help prevent costly breakdowns and extend the life of your truck.

What are signs my truck may need brake service?

Common warning signs include squealing or grinding noises, reduced stopping power, brake pedal vibration, or a brake warning light. If you notice any of these issues, it's important to have your brakes inspected promptly.