Truck Repair

Full-service diagnostics and repairs for diesel trucks, vocational vehicles, and chassis cab platforms.

Truck Repair

Trusted Truck Repair for Commercial, Vocational, and Fleet Vehicles

Matthews Motors delivers comprehensive in-shop and on-site repairs for diesel trucks of every make and class — from light-duty workhorses to heavy vocational rigs.

Engine & Drivability Diagnostics

If your truck is running rough, down on power, or throwing fault codes, Matthews Motors provides in-depth drivability diagnostics and repair for both gas and diesel engines. Our certified technicians use OEM-level scan tools, pressure testing, and advanced troubleshooting methods to quickly identify performance issues.

Services

Diesel engine diagnostics and repair
Injector replacements
Turbocharger servicing
Fuel system repairs

Common Failures

Loss of power
Rough idling
Hard starting
Fuel contamination

Diagnostics Process

Full engine diagnostic scan
Compression and injector testing
Visual and electronic troubleshooting

Repair Approach

OEM parts and repair procedures
Certified diesel technicians
In-shop and mobile repair options

Fleet Applications

Long-haul fleets
Construction trucks
Vocational diesel trucks

Diesel engine diagnostics and repair
Injector replacements
Turbocharger servicing
Fuel system repairs

Transmission Repair & Replacement

When your truck struggles to shift, slips under load, or won’t engage gears, Matthews Motors offers diagnostics and repair for automatic and manual transmissions — including PTO-driven units, heavy-duty Allison and Eaton systems, and vocational builds.

Services

Transmission diagnostics and rebuilds
Clutch replacements
Shift actuator repairs
Hydraulic and electrical controls servicing

Common Transmission Issues

Hard shifting
Gear slipping
Fluid leaks
Delayed engagement

Repair Diagnostics

Transmission electronic diagnostics
Pressure testing
Clutch wear inspections

Rebuild Process

Bench teardown and inspection
Component replacement and resealing
Road testing for validation

Supported Vehicles

Class 3-8 trucks
Vocational fleets
Owner-operators

Transmission diagnostics and rebuilds
Clutch replacements
Shift actuator repairs
Hydraulic and electrical controls servicing

Brake System Repair

Brake systems are critical to the safety and compliance of every commercial vehicle. Matthews Motors provides full brake diagnostics, maintenance, and repairs for air and hydraulic braking systems on medium- and heavy-duty trucks.

Services

Brake diagnostics and full brake jobs
Air brake system repairs
ABS system servicing

Common Brake Failures

Poor stopping power
Brake pull
Overheating brakes
Brake fade under load

Inspection Process

Full brake system inspection
Pad/shoe measurement
Chamber and line checks

Repair Methods

Brake lining replacement
Brake chamber swaps
Air line repairs and valve replacements

Safety Benefits

Reduced accident risk
Improved stopping distances
DOT compliance

Brake diagnostics and full brake jobs
Air brake system repairs
ABS system servicing

Electrical System Repair

When electrical issues cause reliability problems, Matthews Motors delivers expert diagnostics and repair for starting issues, lighting failures, and electrical faults across commercial truck platforms.

Services

Starter and alternator repairs
Lighting system troubleshooting
Battery system diagnostics

Common Electrical Issues

No start
Intermittent electrical faults
Lighting malfunctions

Troubleshooting Process

Voltage drop testing
Wiring harness inspections
Starter/alternator load testing

Repair Approach

Harness repair or replacement
OEM spec component swaps
Electrical relay diagnostics

Vehicle Types

Light to heavy-duty trucks
Specialty vocational vehicles
Fleet and commercial operators

Starter and alternator repairs
Lighting system troubleshooting
Battery system diagnostics

Cooling & HVAC System Repair

From overheating engines to failed air conditioning, Matthews Motors offers diagnostics and repair for truck cooling and HVAC systems — including radiators, compressors, and everything in between.

Services

Radiator repairs
Water pump replacements
Cooling system diagnostics

Common Cooling Failures

Overheating
Coolant leaks
Fan clutch failures

Cooling System Diagnostics

Pressure testing
Coolant flow checks
Thermostat inspections

On-Site Repairs

Radiator swap-outs
Hose replacements
Coolant flushes

Industry Applications

Construction fleets
Heavy-duty freight trucks
Refrigerated delivery vehicles

Radiator repairs
Water pump replacements
Cooling system diagnostics

Suspension & Steering System Repair

Matthews Motors provides diagnostics and repair for commercial truck suspension and steering systems, restoring alignment, drivability, and ride comfort for medium- and heavy-duty platforms.

Services

Suspension diagnostics and repair
Air ride system servicing
Spring and shock replacements

Common Suspension Problems

Ride height issues
Uneven tire wear
Excessive bouncing

Inspection & Repair Process

Airbag leak checks
Shock performance testing
Spring and bushing inspections

Fleet Benefits

Improved ride quality
Reduced tire wear
Better vehicle control

Vehicle Coverage

Over-the-road trucks
Heavy vocational rigs
Municipal vehicles

Suspension diagnostics and repair
Air ride system servicing
Spring and shock replacements

DPF, DEF & Emissions System Repair

Matthews Motors offers expert diagnostics and repair services for DPF, DEF, and SCR emissions systems. If your truck is derated or struggling to regen, our technicians will get you back in compliance and running at full power.

Services

DPF cleaning and replacement
DEF system diagnostics
EGR valve servicing

Emissions System Failures

Frequent regens
Check engine lights
DEF crystallization
EGR clogs

Diagnostics & Compliance

Forced regen diagnostics
DEF quality testing
EGR flow monitoring

Repair Process

On-site filter swaps
DPF bake and clean services
Sensor replacements

Regulatory Coverage

DOT emissions compliance
California CARB standards
Federal emissions testing support

DPF cleaning and replacement
DEF system diagnostics
EGR valve servicing

Makes & Models

Freightliner
Kenworth
Peterbilt
International
Hino
Isuzu
Ford
RAM
GMC & Chevrolet Commercial
Mack
Volvo
UD
Sterling

Vocations / Industries

Cab & Chassis
Box Trucks & Reefers
Dump Trucks
Service Bodies & Utility Vehicles
Flatbeds & Contractors’ Rigs
Government & Public Works Vehicles

Truck Repair

Truck Repair

Trusted Truck Repair for Commercial, Vocational, and Fleet Vehicles

Engine & Drivability Diagnostics

Services

Common Failures

Diagnostics Process

Repair Approach

Fleet Applications

Services

Common Transmission Issues

Repair Diagnostics

Rebuild Process

Supported Vehicles

Services

Common Brake Failures

Inspection Process

Repair Methods

Safety Benefits

Services

Common Electrical Issues

Troubleshooting Process

Repair Approach

Vehicle Types

Services

Common Cooling Failures

Cooling System Diagnostics

On-Site Repairs

Industry Applications

Services

Common Suspension Problems

Inspection & Repair Process

Fleet Benefits

Vehicle Coverage

Services

Emissions System Failures

Diagnostics & Compliance

Repair Process

Regulatory Coverage

Makes & Models

Vocations / Industries

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