On Site Repairs Where You Break Down
When a diesel goes down along I-580 or I-680, Dallas Heavy Duty Service brings the shop to you. Our certified technicians roll out in fully equipped service trucks carrying diagnostic computers, common parts, and high capacity tools, so most repairs happen right on the shoulder, at your job site, or in your Pleasanton fleet yard. No waiting on a tow, no lost hours rotating a truck to Hayward or Fremont.
Our mobile units function as rolling laboratories, purpose built to haul heavy tools, fluid systems, and sensitive diagnostic equipment across demanding Bay Area highways. On scene we handle hydraulic hose fabrication, air brake chamber replacements, alternator and starter swaps, cooling system leaks, sensor replacements, electrical harness repairs, and advanced computer diagnostics including clearing fault codes and forced DPF regenerations. The goal is simple: get your disabled or at risk truck back into service with minimal downtime.
What We Fix Roadside In Pleasanton
Air brake systems get our full attention: brake chambers, air leaks, ABS modules, slack adjusters, and brake lines repaired on site. We also handle electrical work start to finish, from battery testing and alternator repair to wiring diagnosis, starter replacement, and lighting faults, all resolved wherever your truck sits along the Tri Valley freight corridors.
Overheating on a grade climb near Pleasanton is one of our most common summer calls. We perform cooling system flushes, hose replacement, thermostat and fan clutch swaps, and radiator service to stop the heat before it strands you. Fuel troubles are covered too, with fuel filter replacement, fuel priming, injector diagnostics, and complete mobile engine repair finished at your location.
A full OBD and ECM scan pinpoints fault codes across every diesel platform, engine and emissions systems alike. We plug in and review live data for Cummins, Detroit, Paccar MX, and Volvo D series engines right in the Pleasanton corridor. Add commercial tire service, blowout response, flat repair, tire changeouts, torque checks, and mobile welding, and most breakdowns end on the roadside.
DPF, Regens, And CARB Compliance
Most DPF regen issues can be cleared roadside with a forced regen and a differential pressure sensor cleaning, getting you moving again without pulling off route. When a full DPF removal is required, we coordinate the work through our trusted partner shops so nothing slips through the cracks.
California runs the most aggressive clean truck enforcement in the country, and Pleasanton operators feel that pressure daily. We handle DEF and SCR diagnostics, emissions related sensor work, and the forced regens that keep older engines running and compliant, helping you avoid restrictions without sidelining a truck for days at a time.
Under the Clean Truck Check program, heavy duty diesels over 14,000 pounds face semi annual emissions testing, and properly functioning emissions controls are no longer optional. Our technicians understand what CARB inspections require, so we can diagnose and repair the systems that keep your fleet passing and on the road.
Mobile diesel repair makes the most sense for fleets that cannot spare the time to rotate vehicles to a shop one truck at a time. When your trucks are already staged in a Pleasanton yard or at a Bay Area distribution site, we bring service to them, handling repairs and preventive tasks on the spot. That lets you keep control of your schedule instead of building the whole day around transport logistics, tow trucks, and shop appointments that eat into revenue miles.
Preventive maintenance is a core part of what we do, not an afterthought behind emergency work. We perform mobile DOT inspections, pre trip and post trip inspections across your entire fleet of trucks or vans, plus oil and fluid changes, clutch service, compressed air system checks, trailer door repairs, and scheduled component swaps. Catching wear before it becomes a roadside failure keeps your operation predictable and your Class 6 through 8 units earning instead of sitting.
