Diesel Engine Repair Services for Heavy-Duty Trucks
Professional Diesel Engine Repair for Commercial Trucks and Off-Highway Vehicles
At General Truck Parts, we provide comprehensive diesel engine repair services for heavy-duty trucks, vocational equipment, off-highway vehicles, and owner-operators in Chicago. From routine maintenance and diagnostics to complete engine overhauls and in-frame rebuilds, our experienced technicians help keep commercial vehicles operating at peak performance.
We specialize in servicing many of the industry’s most popular diesel engines and truck platforms, including Caterpillar, Cummins, Detroit Diesel, Volvo, Mack, Freightliner, Peterbilt, and Kenworth applications. We stock engine rebuild kits and components from PAI, AFA and other trusted OEM and aftermarket brands.
Whether you’re experiencing excessive oil consumption, loss of power, coolant contamination, engine knock, hard starting, turbocharger failure, or complete engine failure, our team can diagnose the problem and recommend the most cost-effective repair solution.
General Truck Parts & Equipment
4040 W. 40th Street
Chicago, IL 60632
Toll-free: 800-621-3914
Local call: 773-247-6900
Email: info@generaltruckparts.com
Call now to order!
 | 800-621-3914 |
Complete Diesel Engine Repair Services
Our technicians perform a full range of heavy-duty diesel engine repair and maintenance services.
Engine Diagnostics
Modern diesel engines rely on sophisticated electronic controls and emissions systems. Accurate diagnostics are critical for identifying failures quickly.
- Electronic diagnostics
- ECM troubleshooting
- Sensor testing
- Wiring repairs
- Fault code analysis
- Performance testing
- Engine health inspections
In-Frame Engine Rebuilds
An in-frame rebuild allows major engine components to be replaced without removing the engine from the chassis. Benefits include reduced downtime and lower repair costs.
- Cylinder liners
- Pistons
- Rings
- Rod bearings
- Main bearings
- Gasket replacement
- Cylinder head service
- Oil pump inspection
Out-of-Frame Engine Rebuilds
For severe engine damage, a complete out-of-frame rebuild may be required.
- Complete engine removal
- Crankshaft inspection
- Block machining
- Camshaft replacement
- Complete bearing replacement
- Internal component replacement
- Engine reassembly
- Dyno testing
Cylinder Head Repairs
Cylinder head issues can significantly affect performance and reliability.
- Valve replacement
- Valve seat machining
- Injector bore repairs
- Pressure testing
- Surface machining
- Head gasket replacement
Turbocharger Service
Turbochargers are essential to diesel engine performance.
- Turbocharger diagnostics
- Turbo replacement
- Wastegate repair
- VGT actuator service
- Charge air system inspection
Fuel System Repairs
Fuel system issues can result in poor performance, excessive smoke, and hard starting.
- Injector replacement
- Fuel pump replacement
- High-pressure fuel system repairs
- Fuel line replacement
- Fuel contamination remediation
Cooling System Repairs
Overheating is one of the leading causes of diesel engine damage.
- Radiator replacement
- Water pump replacement
- Thermostat replacement
- Coolant flushes
- Fan clutch service
- Charge air cooler repairs
EGR and Emissions System Repairs
Modern diesel engines rely on emissions systems that require periodic maintenance and repair.
- EGR valve replacement
- EGR cooler replacement
- DPF service
- DOC replacement
- SCR diagnostics
- DEF system repairs
- Sensor replacement
Engine Lubrication System Repairs
Proper lubrication is critical to engine longevity.
- Oil pump replacement
- Oil cooler replacement
- Oil leak repair
- Crankcase ventilation repairs
- Oil pressure diagnostics
Engine Accessory Repairs
Accessory components can affect reliability and vehicle uptime.
- Air compressor replacement
- Alternator replacement
- Starter replacement
- Belt replacement
- Tensioner replacement
- Pulley replacement
Maintenance Programs
Preventative maintenance remains one of the most effective ways to reduce operating costs and prevent catastrophic failures.
Services include:
- Scheduled inspections
- Oil and filter changes
- Coolant testing
- Fuel system maintenance
- Valve adjustments
- Engine performance monitoring
- Preventative repair recommendations
Why Choose General Truck Parts for Diesel Engine Repairs?
After 55 years in business, our team understands the unique demands placed on commercial vehicles and heavy-duty diesel engines. We combine technical expertise with access to a vast inventory of OEM and aftermarket replacement parts to minimize downtime and maximize reliability. Benefits include:
- Experienced diesel technicians
- Heavy-duty truck expertise
- OEM and aftermarket parts availability
- Fast parts sourcing
- Fleet support services
- Diagnostic expertise
- Comprehensive rebuild capabilities
Whether you operate a single truck or manage an entire fleet, General Truck Parts can provide the diesel engine repair services necessary to keep your equipment running safely, efficiently, and profitably. Contact our team today to schedule service, discuss engine rebuild options, request a quote, or learn more about our heavy-duty diesel engine repair capabilities.
Heavy-Duty Trucks We Service
Freightliner Trucks
- Freightliner Cascadia
- Freightliner Columbia
- Freightliner Coronado
- Freightliner M2 106
- Freightliner M2 112
- Freightliner Business Class
- Freightliner FLD 120
- Freightliner 122SD
- Freightliner 114SD
Peterbilt Trucks
- Peterbilt 389
- Peterbilt 379
- Peterbilt 567
- Peterbilt 579
- Peterbilt 567 Vocational
- Peterbilt 365
- Peterbilt 367
- Peterbilt 348
Kenworth Trucks
- Kenworth W900
- Kenworth T680
- Kenworth T880
- Kenworth T800
- Kenworth W990
- Kenworth T370
- Kenworth T470
- Kenworth C500
Mack Trucks
- Mack Anthem
- Mack Pinnacle
- Mack Granite
- Mack TerraPro
- Mack LR
- Mack RD Series
- Mack CH Series
- Mack Vision
Volvo Trucks
- Volvo VNL
- Volvo VNR
- Volvo VHD
- Volvo VAH
- Volvo VT
- Volvo VNM
Diesel Engines We Service
Cummins Diesel Engines
- Cummins X15
- Cummins ISX15
- Cummins ISX12
- Cummins ISM
- Cummins N14
- Cummins M11
- Cummins L10
- Cummins ISL
- Cummins ISC
- Cummins B6.7
- Cummins ISB
- Cummins X12
Caterpillar Diesel Engines
- CAT C15
- CAT C13
- CAT C12
- CAT C11
- CAT C10
- CAT 3406E
- CAT 3406B
- CAT 3406C
- CAT C7
- CAT 3126
Detroit Diesel Engines
- Detroit DD15
- Detroit DD13
- Detroit DD16
- Detroit Series 60
- Detroit 12.7L
- Detroit 14.0L
- Detroit MBE 4000
Mack Diesel Engines
- Mack MP7
- Mack MP8
- Mack MP10
- Mack E7
- Mack E-Tech
Volvo Diesel Engines
- Volvo D11
- Volvo D13
- Volvo D16
- Volvo VE D12
Contact Us Today
Our Experts are available to answer your questions and help you with your needs.
We take pride in getting you your answers, parts, and assemblies fast.
| 800-621-3914 |