Hear from Our Customers
When your semi breaks down on I-75 or anywhere in the Willow area, every minute costs you money. You need a repair service that gets it—that understands a parked truck doesn’t pay bills.
Our mobile semi truck repair service comes to you, eliminating expensive towing costs and the hassle of finding an unfamiliar shop. With over 40 years serving the Detroit metro area, we know exactly what it takes to get commercial vehicles back in service fast.
You’ll have a detailed repair estimate within two hours, complete transparency on costs, and the confidence that comes from working with ASE-certified mechanics who specialize in heavy-duty trucks. No surprises, no runaround—just professional service that respects your schedule and your bottom line.
We’ve been keeping trucks moving in the Willow and La Salle area since 1999. What sets us apart isn’t just our four decades of experience—it’s the depth of knowledge that comes from Dr. Phillip Marin’s three Ph.D. degrees in Diesel Engineering, Drivetrains, and Metal Alloys.
This isn’t your typical roadside repair service. When you call us, you’re getting mechanics who understand the complex systems in today’s commercial trucks, from advanced diesel diagnostics to electronic brake systems. We know the I-75 corridor, the challenges drivers face, and exactly what it takes to perform lasting repairs that won’t leave you stranded again.
Our family-owned business serves the entire Detroit metro area, with a special focus on the heavy commercial traffic that moves through Willow, La Salle Township, and the I-75/US-24 interchange area.
When you call J&J Truck & Trailer Repair, here’s exactly what happens. First, our dispatch team gets your location and truck details, then immediately sends the closest mobile repair unit to your location—whether you’re on I-75, at a truck stop, or at a delivery site.
Our certified mechanic arrives with a fully-equipped service truck and runs a complete diagnostic to identify the problem. You’ll get a detailed explanation of what’s wrong and a clear estimate before any work begins. No hidden fees, no surprises.
Most repairs happen right on the spot. For complex issues that require shop work, we coordinate towing to our facility and keep you updated throughout the process. Our goal is simple: get you back to making money as quickly as possible, with repairs done right the first time.
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Our mobile semi truck repair covers everything from emergency breakdowns to scheduled maintenance. We handle diesel engine diagnostics, brake system repairs, electrical troubleshooting, transmission issues, air system problems, and on-site tire replacement.
The La Salle and Willow area sees heavy commercial traffic year-round, especially with the proximity to major shipping routes and manufacturing centers. That means trucks here face unique challenges—from winter road salt affecting brake lines to the constant stop-and-go traffic that’s hard on clutches and transmissions.
We stock parts for all major truck brands and can handle everything from a simple battery jump-start to complex engine diagnostics. Our reefer trailer repair service keeps temperature-sensitive cargo protected, while our fleet maintenance programs help prevent costly breakdowns before they happen. Whether you’re an owner-operator or manage a large fleet, we tailor our services to keep your operation running smoothly.
Our average response time for emergency semi truck repairs in the Willow and La Salle area is typically 45-60 minutes, depending on your exact location and current traffic conditions. We maintain mobile repair units strategically positioned throughout the Detroit metro area, including coverage along the I-75 corridor.
When you call, our dispatch immediately locates the nearest available mechanic and provides you with an estimated arrival time. We understand that in the trucking business, every minute of downtime costs money—studies show that truck breakdowns can cost $600-$1,200 per day in lost revenue. That’s why we prioritize fast response times and come fully equipped to handle most repairs on-site, eliminating the need for expensive towing.
Our mobile repair units can handle about 80% of common semi truck problems right at your location. This includes diesel engine diagnostics, brake system repairs, electrical issues, air system problems, starter and alternator replacement, battery service, and on-site tire changes.
We carry diagnostic equipment that works with all major truck brands, plus a comprehensive inventory of common parts and fluids. For complex repairs like major engine work or transmission rebuilds, we’ll coordinate towing to our shop, but most breakdowns—from failed sensors to brake adjustments—can be resolved without moving your truck. Our mechanics are trained on modern truck systems and carry the tools needed for everything from forced regens to ABS sensor replacement.
Yes, we service all major semi truck brands including Freightliner, Peterbilt, Kenworth, Volvo, Mack, International, and others. Our lead mechanic Dr. Phillip Marin holds three Ph.D. degrees in Diesel Engineering, Drivetrains, and Metal Alloys, giving us the technical expertise to work on any commercial vehicle system.
We maintain diagnostic equipment and parts inventory for all major manufacturers, and our ASE-certified mechanics receive ongoing training on the latest truck technologies. Whether you’re driving a newer truck with advanced emissions systems or an older model that needs specialized attention, we have the knowledge and tools to get the job done right. Our 40+ years in business means we’ve seen it all and can handle everything from vintage trucks to the newest models on the road.
Our mobile semi truck repair rates are competitive and transparent—you’ll receive a detailed estimate within two hours of our mechanic’s arrival, before any work begins. We charge a service call fee that covers our mobile response, plus parts and labor at our standard shop rates.
Unlike some services, we don’t inflate prices for emergency calls or add hidden fees for nights and weekends. Our goal is to provide fair, honest pricing that reflects the quality of our work and the convenience of mobile service. We accept most forms of payment and can work with fleet accounts for regular customers. For complex repairs, we’ll explain all options and costs upfront, so you can make informed decisions about your truck and your business.
Absolutely. We offer comprehensive fleet maintenance programs designed to prevent costly breakdowns before they happen. Our preventive maintenance services include scheduled inspections, oil changes, brake system checks, tire rotations, and diesel engine maintenance.
Fleet maintenance is especially important in the Willow area due to the heavy I-75 traffic and varying road conditions throughout the year. We can work with your schedule to perform maintenance during downtime, and our mobile units can service trucks at your facility to minimize disruption. Studies show that proper preventive maintenance can extend the time between major breakdowns from every 100,000 miles to 300,000-400,000 miles, significantly reducing your operating costs and keeping your drivers safe on the road.
Yes, we provide true 24/7 emergency service, 365 days a year. Truck breakdowns don’t follow business hours, and neither do we. Whether it’s 3 AM on a Sunday or during a holiday weekend, our emergency response team is ready to get you back on the road.
We understand that breakdowns often happen at the worst possible times—when you’re racing to make a delivery deadline or stuck in an unfamiliar area. Our round-the-clock availability means you’re never more than a phone call away from professional help. We maintain fully-equipped mobile repair units and certified mechanics on call at all times, because we know that in the trucking industry, time really is money and every hour counts.
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