Diesel diagnostics
Computer diagnostics, fault-code reading, and hands-on inspection to identify the root cause of diesel performance, drivability, and warning-light concerns.
East Texas diesel repair
Diesel repair for trucks, commercial vehicles, and equipment.
Xpress Auto & Diesel provides diesel diagnostics, repair, and maintenance for light-duty trucks, heavy-duty commercial vehicles, and working equipment across East Texas. Tyler, Lindale, and Nacogdoches.
Diesel repair in East Texas
Diesel repair built around working vehicles.
Diesel-powered trucks, commercial vehicles, and equipment are built to work. When something is off — a warning light, a power loss, a rough idle, excessive smoke, or a hard start — getting a clear diagnosis quickly matters.
Xpress Auto & Diesel works on a wide range of diesel applications across East Texas, from light-duty pickups to heavy commercial trucks and equipment. The team can help identify the problem, explain the repair path, and get your vehicle or equipment back on the road.
Light-duty diesel pickups
Powerstroke, Duramax, Cummins
Heavy-duty commercial trucks
Class 3–8, cab-over, conventional
Diesel equipment
Construction, agricultural, industrial
Mobile diesel repair
Lindale and Nacogdoches locations
What we work on
Diesel repair and service areas
Fuel system service
Fuel injector diagnosis, fuel pump inspection, fuel filter service, and fuel system repair for diesel trucks and commercial vehicles.
Cooling system repair
Radiator, coolant, thermostat, water pump, and cooling system inspection and repair to keep diesel engines operating at the right temperature.
Electrical and starting systems
Battery, alternator, starter, glow plug, and electrical system diagnostics and repair for diesel trucks and equipment.
Turbocharger service
Turbo inspection, diagnosis, and repair for diesel trucks and commercial vehicles experiencing boost loss, smoke, or turbo-related performance concerns.
Emissions and exhaust
DPF, EGR, DEF system, and exhaust repair and service for diesel trucks subject to emissions requirements.
Preventive maintenance
Oil changes, filter service, fluid checks, belt and hose inspection, and scheduled maintenance to keep diesel vehicles and equipment ready for work.
Commercial truck repair
Repair support for Class 3 through Class 8 commercial trucks, including cab-over and conventional configurations used in freight, construction, and service work.
Engine-specific repair
Diesel engine experience
Xpress Auto & Diesel works on a range of diesel engines found in light-duty trucks, heavy-duty commercial vehicles, and equipment across East Texas.
When to call
Common diesel concerns
These are some of the most common reasons diesel truck and equipment owners contact Xpress Auto & Diesel.
Check engine or warning light
A diesel warning light can indicate anything from a sensor fault to a serious mechanical concern. Diagnostics identify the cause.
Power loss or sluggish performance
Reduced power under load, slow acceleration, or a noticeable drop in performance often points to fuel, turbo, or air system issues.
Excessive smoke
Black, white, or blue smoke from the exhaust can indicate fuel system problems, turbo issues, coolant leaks, or oil consumption.
Hard start or no start
Difficulty starting, especially in cold weather, can involve glow plugs, fuel delivery, compression, or electrical system concerns.
Rough idle or misfires
Uneven idle, shaking, or misfires in a diesel engine often trace back to injectors, fuel pressure, or compression issues.
Overheating
Diesel engines running hot or overheating require prompt attention to prevent serious engine damage. Cooling system inspection is the first step.
Oil or fluid leaks
Diesel engines and their associated systems can develop leaks at gaskets, seals, coolers, and connections that need to be identified and repaired.
DPF, EGR, or DEF system faults
Emissions system faults on newer diesel trucks can trigger warning lights, reduced power modes, or regeneration issues that need diagnosis.
Common questions
Diesel repair questions
Have a question not covered here? Call the location nearest you.
Contact a locationBy engine type
Looking for a specific diesel engine?
Xpress works on every major diesel engine family. If you know your engine, start there — each page covers what we handle for that specific platform.
Find us in East Texas
Three East Texas locations
Ready to talk through your diesel repair?
Contact the Tyler, Lindale, or Nacogdoches location that works best for your vehicle, truck, or equipment.
East Texas locations
Diesel repair near you
Three shops across East Texas, all equipped for diesel repair. Find the location closest to you.