Hear from Our Customers
When your semi breaks down, every minute costs you money. You’re not just losing a load—you’re watching your margins disappear while your truck sits dead on the highway or in your yard.
We get it. That’s why J&J Truck & Trailer Repair brings the shop to you, anywhere in La Salle and the Detroit metro area. No waiting for a tow truck. No expensive shop fees. No wondering when you’ll be rolling again.
Our mobile service means you’re back to hauling freight instead of burning cash on downtime. Because in trucking, time isn’t just money—it’s everything.
We’ve been keeping La Salle’s trucks moving since the 1980s. We’re not some fly-by-night operation—we’re the family-owned shop that built our reputation one breakdown at a time.
Led by Dr. Phillip Marin, who holds three Ph.D. degrees in Diesel Engineering, Drivetrains, and Metal Alloys, we know these machines inside and out. When other shops throw up their hands, we roll up our sleeves.
La Salle sits right on the I-75 corridor where freight never sleeps. We’ve seen every breakdown scenario from Telegraph Road to the Ohio border, and we’ve fixed them all. Your emergency becomes our priority, whether it’s 2 PM or 2 AM.
Call us when your truck goes down. Our dispatch team gets your location and sends the right technician with the right equipment. No guessing, no delays.
Our mobile unit arrives fully stocked—diagnostic equipment, tools, common parts, welding gear. We diagnose the problem on-site and fix what we can right there. Most repairs happen roadside, getting you rolling without a tow.
If we need to bring your truck in, we coordinate everything. Towing, parts, timeline—you get straight answers about what it’ll take and what it’ll cost. No surprises, no runaround.
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We handle the full spectrum of semi truck problems. Engine diagnostics and repairs, brake system overhauls, transmission work, electrical troubleshooting, air system fixes, and emergency tire service. If it rolls on 18 wheels, we fix it.
La Salle’s location on major freight routes means we see every type of breakdown. Overheated engines from Detroit summer heat. Frozen air lines during Michigan winters. Brake failures from heavy loads heading to the ports. We’ve diagnosed and repaired them all.
Our service area covers I-75 from the Ohio border north through Detroit, plus US-24 and Telegraph Road corridors. Fleet managers know they can count on us for their drivers anywhere in southeastern Michigan.
Our target response time is within one hour of your call, often faster depending on your location and our technician availability. We keep mobile units positioned throughout the La Salle and Detroit metro area specifically to minimize response times.
Location matters. If you’re broken down on I-75 near the Telegraph Road exit, we can usually have someone there in 30-45 minutes. More remote locations might take the full hour, but we give you realistic timeframes upfront.
We track every call and measure our response times because we know downtime costs you money. Our dispatch system routes the closest available technician to your location, and we’ll give you their ETA and contact info so you can track progress.
Our mobile units handle most common roadside failures: engine diagnostics and minor repairs, brake adjustments and air system fixes, electrical problems, alternator and starter replacement, battery service and jump starts, tire changes and wheel bearing work, and emergency welding repairs.
We carry diagnostic computers that work with all major truck manufacturers—Freightliner, Peterbilt, Kenworth, International, Volvo, and Mack. Our technicians can pull fault codes, diagnose problems, and often fix them without towing your truck anywhere.
The repairs we can’t do roadside usually involve major engine work, transmission rebuilds, or extensive frame repairs that require shop equipment. But we’ll tell you honestly what needs to happen and coordinate towing if necessary.
Yes, we work on all major commercial truck brands and their diesel engines. Our experience covers Cummins, Detroit Diesel, Caterpillar, International, and PACCAR engines across all the major chassis manufacturers.
Dr. Marin’s background in diesel engineering means we understand these systems at a technical level that most shops don’t reach. Whether you’re running a new Peterbilt with all the emissions equipment or an older Freightliner that’s been rebuilt twice, we have the knowledge and tools to diagnose and repair it.
We also service trailers, reefer units, and specialized equipment. Our mobile units carry the diagnostic equipment and common parts for most fleet applications, from dry vans to refrigerated trailers to flatbeds.
Our emergency service rates vary based on the type of repair, time of day, and location. We provide upfront pricing before any work begins—no surprises on your bill. Emergency calls after hours and on weekends carry a service premium, but we keep our rates competitive with other qualified providers.
Most diagnostic calls start around $150-200, with additional charges for parts and labor if repairs are needed. Simple fixes like jump starts or minor adjustments might be resolved for just the service call fee. Major repairs are quoted separately based on the specific work required.
We accept fleet accounts, major credit cards, and common trucking payment methods like Comdata and EFS. For regular customers, we can set up billing arrangements that work with your cash flow needs.
Absolutely. We perform DOT inspections and can address most compliance violations on the spot. Our technicians understand current DOT regulations and what inspectors look for during roadside checks.
Common compliance fixes we handle include brake adjustments, lighting repairs, air leak corrections, and safety equipment replacements. If your truck gets tagged during a DOT inspection, we can often resolve the violations quickly to get you back in service.
We also provide pre-trip inspection services for fleets that want to catch problems before they become roadside emergencies or DOT violations. Regular maintenance and inspections prevent most of the breakdowns that cost you time and money.
Yes, we provide comprehensive preventive maintenance programs tailored to your fleet’s needs and schedules. Regular maintenance prevents the expensive breakdowns that shut down your operations and cost you loads.
Our maintenance programs include scheduled oil changes, brake inspections, air system checks, electrical system testing, and engine diagnostics. We can work around your delivery schedules and perform maintenance at your yard or our shop, whichever works better for your operation.
Fleet managers appreciate our detailed maintenance records and reporting. We track each vehicle’s service history and alert you to upcoming maintenance needs or potential problems before they cause breakdowns. It’s much cheaper to replace a belt during scheduled maintenance than to have it fail on I-75 during rush hour.
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