LGDiag.com · Mobile diagnostics
Mobile diagnostics for trucks, tractors, and heavy equipment in the Rio Grande Valley and South Texas. We use fault scans, live operating data, and targeted testing to help find the cause and guide the repair.
Vehicles & equipment we service
Mobile diagnostics for commercial vehicles, construction equipment and agricultural machinery.
Available nowExcavators, loaders, skid steers, backhoes, graders, cranes and selected stationary or road-maintenance machines.
Available nowTractors, combines, forage and grape harvesters, sprayers, balers and supported implements.
Available nowTrucks, buses, trailers, work vans and commercial pickups, from one vehicle to a fleet.
Functions vary by make, model, year, controller and connection. Send your equipment details and VIN or serial / PIN plate so we can confirm support.
Diagnostic capabilities
Fault scans, live data and targeted tests to guide the next repair.
Read fault codes and identify which systems need attention.
Check sensor readings to understand when and how a fault appears.
Test supported components to help pinpoint the cause.
Investigate DPF, DEF and SCR faults; supported regeneration when conditions allow.
Supported sensor calibrations, injector coding and service resets.
Get the findings, checks performed and recommended next steps.
Available functions depend on the vehicle, machine and installed systems.
On-site work guided by the findings.
Service based on operating hours and maintenance schedules.
Follow-up scans and checks to assess the repair.
Recognize the symptoms?
Text us the exact fault code and a dashboard photo. A few details help us understand what your vehicle or machine needs.
Text us about your vehicle or machineRegen failure, soot load, aftertreatment warnings
Power loss, limp mode, performance faults
Cranking, fuel, electrical, or sensor issues
Active faults and intermittent alerts
Wiring, sensors, CAN networks, power and grounds
Slow movement, no lift, intermittent operation
From first message to next steps
Share a few details so we can check coverage and discuss the right next step for your machine.
Send the make, model, year, your city, and the symptoms or fault code. Photos and recent repair history help.
We discuss equipment support, the initial scope, visit cost and travel before agreeing on an appointment.
Review the checks performed and what they show. Discuss repair recommendations and any additional work.
A service request does not reserve a time. We will confirm availability and the visit details with you.
Request mobile diagnostics
Share your equipment details and location. Prepare a message here, then review and send it through WhatsApp or email. You can also text us directly.
Rio Grande Valley & South Texas
Serving commercial vehicle owners, fleets, farms, ranches, and construction jobsites in Mission, McAllen, Edinburg, Pharr, Weslaco, and surrounding communities.
Commercial vehicles · Off-highway · AgricultureSend your equipment details, symptoms and location for a quote. We discuss the initial diagnostic scope and any travel charge before scheduling. Additional repair work is discussed separately.
Yes. We provide mobile diagnostic service for vehicle owners, fleets, farms, ranches, and construction jobsites across the Rio Grande Valley and surrounding South Texas communities. Send your location so we can discuss the visit.
We support commercial vehicles, off-highway equipment, and agricultural machinery. Coverage depends on the make, model, year, controller, and connection. Send the VIN or a photo of the serial / PIN plate so we can confirm support before scheduling.
Include your make, model, year, city or jobsite, and the symptoms or exact fault code. A dashboard photo and any recent repair history help us understand the next step.
Start your request
Complete the required fields, then choose how to send your message. Nothing is sent by this form.
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