Hear from Our Customers
You’re not making money when your truck’s sitting broken. That’s why we focus on getting you moving again as quickly as possible.
Our mobile repair service brings the full shop to your breakdown location. No waiting for tow trucks or sitting in repair shop queues for days. Most roadside repairs are completed within hours, not the industry average of 4.3 days.
When you call J&J, you’re getting a team that understands the I-75 corridor inside and out. We know where trucks break down most often and what problems hit hardest in this area.
J&J Truck & Trailer Repair has been keeping Detroit metro trucks running since the early 1980s. We’re not some fly-by-night operation – we’re a family business with deep roots in this community.
Dr. Phillip Marin leads our team with three Ph.D. degrees in Diesel Engineering, Drivetrains, and Metal Alloys. That level of technical knowledge is rare in this industry, and it shows in how quickly we diagnose problems that stump other shops.
We serve the I-75 corridor from our Detroit base, with special focus on the La Salle Township area where heavy freight traffic creates unique challenges. When you’re hauling through exit 9 or dealing with Telegraph Road congestion, you need people who understand those conditions.
When your truck breaks down, you don’t have time for complicated procedures. Our process is straightforward because we know you need to get moving.
First, you call our 24/7 dispatch line. We’ll ask about your location, the problem you’re experiencing, and what kind of truck you’re driving. Our dispatcher immediately sends the closest mobile unit to your location.
Our technician arrives with diagnostic equipment and common parts. Most problems get diagnosed within 30 minutes. If we can fix it on-site, we do. If it needs shop work, we’ll coordinate towing to minimize your downtime and get you the fastest turnaround possible.
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We handle everything from emergency breakdowns to scheduled maintenance. Our mobile units carry diagnostic computers, welding equipment, and parts inventory for the most common repairs.
Diesel engine diagnostics and repairs cover everything from injector problems to turbo issues. We service all major truck brands and can handle both mechanical and electronic problems. Our brake service includes air brake systems, ABS sensors, and complete brake replacements.
The I-75 corridor puts extra stress on trucks with its heavy traffic and frequent stops. We see more transmission problems, air system issues, and tire wear in this area than in rural routes. That experience helps us fix problems faster and recommend maintenance that prevents future breakdowns.
Our average response time for emergency calls in the Samaria and La Salle area is 45-60 minutes. We have mobile units strategically positioned to serve the I-75 corridor, including the Telegraph Road interchange and surrounding areas.
Response times can vary based on traffic conditions and weather, but we prioritize emergency calls where trucks are blocking traffic or creating safety hazards. Our dispatch team stays in constant contact with you during the response, providing updates on arrival time and any delays.
For breakdowns during peak traffic hours or severe weather, we coordinate with local authorities when necessary to ensure safe repair conditions. Our goal is always to get you back on the road as quickly and safely as possible.
Our mobile units handle most common roadside repairs including brake adjustments, air system leaks, electrical problems, battery replacement, and starter repairs. We carry diagnostic equipment that works with all major truck computer systems.
Engine repairs depend on the specific problem, but we can handle fuel system issues, replace sensors, and perform many turbo-related fixes on location. Transmission problems often require shop work, but we can diagnose the issue and determine if it’s safe to drive to a repair facility.
We also provide tire changes, including commercial tire replacement and wheel bearing service. Our mobile welding capability handles broken brackets, exhaust repairs, and other structural issues that commonly occur on heavy-duty trucks.
Yes, we service all major commercial truck brands including Freightliner, Peterbilt, Kenworth, Volvo, Mack, and International. Our diagnostic equipment works with Detroit Diesel, Caterpillar, Cummins, and other major engine manufacturers.
Dr. Marin’s extensive background in diesel engineering means we stay current with the latest truck technology and computer systems. We regularly update our diagnostic tools and training to handle newer truck models and their increasingly complex electronic systems.
Our parts inventory focuses on components that fail most frequently across all truck brands. For specialized parts, we have relationships with suppliers throughout the Detroit metro area to minimize delays in getting your truck repaired.
Our emergency service call rate starts at $150, which covers the first hour of diagnostic and labor time. Additional labor is billed at $125 per hour, with parts charged at cost plus a reasonable markup.
We provide upfront estimates before beginning any major repairs, so you know what to expect. There are no hidden fees for mileage, after-hours service, or weekend calls. Our goal is transparent pricing that helps you make informed decisions about repairs.
For fleet customers, we offer service agreements that can reduce emergency call rates and provide priority response. These agreements make sense for companies running multiple trucks through the I-75 corridor on a regular basis.
Absolutely. We perform DOT inspections and can address most compliance issues on the spot. Our technicians are familiar with FMCSA regulations and know what inspectors look for during roadside checks.
Common compliance fixes include brake adjustments, lighting repairs, and addressing minor air leaks that could result in violations. We carry the parts and tools needed for most DOT-related repairs, including replacement lights, air hoses, and brake components.
If you receive a roadside inspection violation, we can often perform the necessary repairs immediately and provide documentation for reinspection. This service helps prevent your truck from being placed out of service, which would cost you significant downtime and revenue.
Yes, we offer comprehensive service agreements for fleet operators running trucks through the Detroit metro area. These contracts include priority emergency response, scheduled maintenance, and discounted labor rates.
Fleet agreements make particular sense for companies whose trucks regularly travel the I-75 corridor, as we can provide faster response times and better parts availability. We work with your maintenance schedule to minimize disruptions to your operations.
Our fleet services include detailed reporting on each truck’s repair history, which helps you make informed decisions about vehicle replacement and maintenance intervals. This data is valuable for managing your total cost of ownership and maximizing truck uptime.
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