Mobile Truck Repair in Texas City, Texas

Texas City On-Site Truck Mechanic

M&R Fleet Services

Engine Diagnostics and Repair

At Texas City On-Site Truck Mechanic, we bring expert engine diagnostics and repair directly to your location—whether you run a Diesel workhorse or a gasoline-powered fleet. Our technicians use advanced diagnostic tools to pinpoint performance issues fast, from small misfires to major power loss. Once identified, we handle the repairs on the spot to get you back on the road with short turnaround.

We service and repair components such as:

  • Fuel injectors and pumps
  • Turbochargers
  • Cylinder heads and gaskets
  • Timing chains and belts
  • Sensors and ignition systems
  • Exhaust and EGR systems
  • Cooling system parts (radiators, thermostats, water pumps)
  • Engine mounts and seals

From light-duty pickups to heavy-duty rigs, we keep every engine running strong and efficient—without the shop visit.

Servicing All Engine Makes and Models

At Texas City On-Site Truck Mechanic, we have the expertise and equipment to service a wide variety of diesel and gasoline engines. Whether it’s routine maintenance, diagnostics, or major repairs, our mobile team handles engines from the most common to the most specialized, keeping your trucks and equipment running reliably.

We service engines from brands including:

PACCAR

Caterpillar

Detroit Diesel

Honda

PACCAR

Caterpillar

Detroit Diesel

Honda

…and many more

No matter the make or model, we bring professional, on-site engine care to your fleet—fast, convenient, and thorough.

Commercial Vehicle Brake Repair

Your brakes are one of the most critical safety systems on any commercial vehicle—and at Texas City On-Site Truck Mechanic, we make sure they’re always ready to perform. Our mobile team handles full brake system diagnostics, maintenance, and repairs for trucks, trailers, and fleets of all sizes. We come to you equipped to restore smooth, reliable stopping power and keep your operations safe on the road.
We inspect and replace:

  • Brake pads and shoes
  • Rotors and drums
  • Calipers and wheel cylinders
  • Air brake chambers and valves
  • ABS sensors and modules
  • Master cylinders and hydraulic lines
  • Slack adjusters and brake hoses
  • Parking brake systems

Count on us for fast, professional service that minimizes downtime and maximizes road safety—right where your trucks are parked.

Industrial Transmission Repair

Heavy-duty transmissions demand expert care—and that’s exactly what Texas City On-Site Truck Mechanic delivers. Our team specializes in diagnosing and repairing industrial-grade transmissions for trucks, equipment, and commercial fleets. Whether you’re dealing with slipping gears, rough shifting, or fluid leaks, we bring the tools and expertise to restore smooth, reliable operation on-site.

We service and repair:

  • Automatic and manual transmissions
  • Clutches and torque converters
  • Transmission pumps and valves
  • Gear sets and synchronizers
  • Seals, gaskets, and filters
  • Drivelines and U-joints
  • Transmission control modules
  • Fluid and cooler systems

We keep your powertrain strong, your shifts smooth, and your downtime minimal—because your work can’t wait for the shop.

Steering & Suspension Service

Is your rig pulling a bit when you apply the brakes? Is the road not all that smooth?

These are signs of suspension and steering trouble, and Texas City On-Site Truck Mechanic keeps both in top shape. Our mobile mechanics inspect, diagnose, and repair steering and suspension systems to improve ride quality, tire life, and overall control. Whether your truck feels loose, pulls to one side, or rides rough, we’ll bring the fix directly to your site.

We service and replace these parts and more:

  • Shocks and struts
  • Ball joints and tie rods
  • Steering gearboxes and linkages
  • Control arms and bushings
  • Springs and suspension airbags
  • Power steering pumps and hoses
  • Wheel bearings and hubs
  • Stabilizer bars and mounts

We help keep your fleet steady, safe, and ready for the long Texas hauls. Keep our number handy for truck suspension service or any other type of big rig repair.

Dial (409) 834-4302.

Electrical and HVAC Service

From flickering lights to weak cabin air, electrical and climate issues can make your day harder and your trucks less reliable. But not to worry—our team is here to help.

We deliver expert mobile repair and diagnostics for both electrical and HVAC systems, ensuring your vehicles stay comfortable, safe, and fully operational. Our technicians quickly locate faults, replace failing parts, and get everything running right again—without you ever leaving the lot.
We inspect and repair:

  • Alternators and starters
  • Batteries and wiring harnesses
  • Lighting and signal systems
  • Relays, fuses, and control modules
  • A/C compressors and condensers
  • Blower motors and cabin filters
  • Heater cores and thermostats
  • HVAC switches and control panels

We make sure your trucks stay powered, cool in summer, and warm in winter—ready for the road in every season.

Trailer Repair Services

No matter what type of trailer you run, we’ll keep it rolling safely and efficiently. Our mobile team handles everything from minor fixes to major component replacements—right where your equipment is parked. We work on all makes and models, ensuring your trailers meet safety standards and stay road-ready for every haul.

We repair and maintain:

  • Dry Vans: Doors, flooring, roof panels, and lighting systems
  • Curtainsides: Curtain tracks, rollers, tarps, and frame alignment
  • Conestogas: Sliding tarp systems, winches, and frame components
  • Hotshots: Brakes, axles, couplers, and electrical wiring
  • Reefers & Reefer Units: Cooling systems, insulation, temperature controls, and fuel systems
  • Flatbeds: Deck boards, tie-down points, landing gear, and lighting

…and much more, including suspension work, air lines, brake systems, and frame repairs. Whatever type of trailer you depend on, we’ll keep it in top condition—fast, efficient, and on-site.

Body Work & Rust Repair

Sometimes we get a call not for mechanical work, but for body and frame repair. Do we do it? You bet we do!

From collision damage to corrosion and surface wear, we restore your vehicle’s exterior so it looks professional and stays protected against the elements. Our mobile team performs on-site body repairs that maintain strength, safety, and appearance without long shop delays.
We handle:

  • Dent and panel repair
  • Rust removal and metal patching
  • Frame and body alignment
  • Door, latch, and hinge adjustments
  • Fender and bumper repair
  • Welding and structural reinforcement
  • Paint prep and touch-ups
  • Protective coatings to prevent future corrosion

We help keep your fleet looking sharp and performing strong—saving you time and extending the life of your vehicles.

24/7 Emergency Roadside Service

Breakdowns don’t keep business hours; they happen right out of the blue. For these your rig needs round-the-clock care—which is precisely what we provide. Texas City On-Site Truck Mechanic delivers 24/7 emergency roadside service for trucks and commercial vehicles throughout Texas City and the surrounding area.
Our emergency services include:

  • Towing and on-site repairs
  • Battery jumps and replacements
  • Tire changes and repairs
  • Fuel delivery and fluid top-offs
  • Lockout assistance
  • Minor engine and transmission repairs

No matter the time or location, we’re ready to respond—keeping your fleet safe and your operations on schedule.