Hear from Our Customers
Your delivery schedule doesn’t stop for breakdowns. Neither do we. When you call J&J Truck & Trailer Repair, you’re getting technicians who understand that every hour your truck sits costs you money.
We dispatch immediately to your location anywhere around La Salle Township, I-75 exit 9, or US-24. Our mobile repair units carry the diagnostic equipment and parts needed for most common semi truck problems. That means we can often fix your issue on-site without the delay and expense of towing to a shop.
Whether it’s a diesel engine that won’t start, brake problems, or electrical issues, we handle the repair where you are. You get back to hauling freight, and your customers get their deliveries on time.
J&J Truck & Trailer Repair has been handling emergency roadside assistance and mobile repairs in the Detroit metro area for over four decades. We’re a family-owned business that understands the trucking industry because we’ve been part of it since the early 1980s.
Led by Dr. Phillip Marin, whose three Ph.D. degrees in Diesel Engineering, Drivetrains, and Metal Alloys bring serious technical expertise to every job. When you’re dealing with a breakdown near La Salle or anywhere along the I-75 corridor, you want someone who knows exactly what they’re looking at under your hood.
We’ve seen the trucking industry change, but one thing hasn’t: drivers and fleet managers need reliable repair service that doesn’t waste time or money. That’s what we deliver, 24 hours a day, seven days a week.
When you call our dispatch, we immediately send the nearest qualified technician to your location. No phone tag, no waiting for callbacks. We get your exact location and the symptoms you’re experiencing, then dispatch with the right equipment for your specific situation.
Our technician arrives with diagnostic tools and a mobile shop setup. We run a complete diagnostic check to identify the exact problem, not just the symptoms. You’ll know what’s wrong, what it takes to fix it, and how long it will take before we start any work.
Most repairs happen right there on the roadside or in the truck stop. For issues that need shop work, we coordinate towing to minimize your downtime. Either way, you’re getting transparent communication throughout the process and a repair that gets you back to work safely.
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Our mobile semi truck repair covers the full range of issues that strand drivers on I-75, US-24, and throughout Monroe County. Engine diagnostics and repairs handle everything from code readings to injector problems and turbo issues. Our brake service includes air brake repairs, ABS sensor replacement, and complete brake system diagnostics.
Transmission and drivetrain repairs keep your power flowing to the wheels. We handle clutch problems, transmission leaks, and driveline vibrations. For reefer units, we service compressors and temperature control systems that keep your cargo at the right temperature.
On-site services include tire replacement, wheel bearing repairs, mobile welding for frame issues, and fuel delivery when you’re stranded with empty tanks. Jump starts and battery replacement get you moving when electrical systems fail. We also provide DOT inspections and safety compliance checks to keep your operation running legally and safely.
We typically dispatch within 15 minutes of your call and arrive on-site within 45 minutes to an hour, depending on your exact location and current traffic conditions on I-75 or local roads. Our 24/7 dispatch keeps technicians positioned strategically around the Detroit metro area.
For breakdowns right in La Salle Township or near major truck stops along Telegraph Road, response times are often faster. We understand that every minute your truck is down costs money, so we prioritize emergency calls and keep you updated on our estimated arrival time.
Our mobile diagnostic equipment can read fault codes, test fuel systems, check turbo operation, and diagnose most common diesel engine issues right at your location. We handle problems like hard starting, loss of power, excessive smoke, coolant leaks, and engine overheating.
Common on-site repairs include fuel filter replacement, injector service, turbo hose repairs, coolant system fixes, and electrical troubleshooting. For major engine work like rebuilds or complete injector replacement, we coordinate with you on the best approach, whether that’s mobile service or shop-based repair.
We carry diagnostic tools compatible with Detroit Diesel, Caterpillar, Cummins, and other major engine manufacturers, so we can properly diagnose your specific engine regardless of make.
Yes, we specialize in air brake system diagnosis and repair for semi trucks and trailers. Our technicians are trained on air brake components including compressors, air dryers, brake chambers, slack adjusters, and ABS systems.
Common brake repairs we handle on-site include brake adjustment, air leak repairs, brake chamber replacement, and ABS sensor replacement. We carry brake parts for most major truck manufacturers and can often complete brake repairs without towing your truck to a shop.
For safety reasons, we perform thorough brake system testing after any repair to ensure your braking system meets DOT standards before you return to the road. We also provide brake inspections as part of our DOT compliance services.
Our technicians service reefer trailer refrigeration units including Thermo King and Carrier systems. We handle compressor problems, temperature control issues, electrical faults, and refrigerant system repairs that keep your temperature-sensitive cargo protected.
Common reefer repairs include compressor replacement, evaporator and condenser cleaning, electrical system diagnosis, and temperature sensor replacement. We also service diesel-powered reefer units with fuel system and engine problems.
When your reefer goes down with a load of perishable goods, we understand the urgency. We prioritize these calls and can often restore temperature control quickly to prevent cargo loss. Our mobile service includes refrigerant recovery and recharging capabilities.
We provide mobile semi truck repair throughout Monroe County and the greater Detroit metro area, with regular service to La Salle Township, Monroe, Frenchtown Township, and surrounding communities. We regularly service calls along I-75 from the Ohio border north through Detroit.
Our service area includes major truck routes like US-24 (Telegraph Road), I-94, I-275, and local roads where trucks travel for deliveries. We also service truck stops, rest areas, and customer locations where breakdowns occur.
If you’re unsure whether we can reach your location, call our dispatch. We often extend our service area for emergency situations, especially when a truck is stranded in an unsafe location or blocking traffic.
Yes, we work with trucking companies and owner-operators to provide ongoing maintenance and priority emergency service. Our fleet programs include scheduled preventive maintenance, discounted repair rates, and priority dispatch for breakdowns.
Fleet customers get dedicated account management, detailed maintenance records, and customized service agreements based on their specific needs and equipment types. We can handle everything from routine PM services to major repairs and DOT inspections.
For fleets operating in the La Salle and Detroit area, we offer on-site maintenance at your facility or preferred locations. This reduces downtime and keeps your trucks on profitable routes instead of sitting in repair shops. Contact us to discuss a maintenance program tailored to your fleet’s needs.
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