Diesel Engine Repair & Diagnostics in Nashville, Tennessee

When a Power Stroke starts smoking, a Cummins loses power under load, or a Duramax throws an injector code, you want a Nashville shop that works on diesels every day rather than once a month. The engine and diagnostic specialists here serve Nashville and nearby Tennessee — with scan tools that read manufacturer codes, injector test benches, and mechanics who know which failures are common on your engine before they lift the hood.

30Diesel Engine Repair & Diagnostics Shops
3Open 24 Hours
4.2Average Rating
0Premium Shops

All Diesel Engine Repair & Diagnostics Shops in Nashville

Fleet Fix - Fleet Maintenance and Auto Repair

Nashville, TN
(615) 840-6367
5.0★(10 reviews)
Heavy Duty RepairFleet MaintenanceTransmission RepairDiesel SpecialistCommercial & Fleet

Southern Fleet Customs, LLC. 26x16

Nashville, TN
(615) 838-7799
5.0★(3 reviews)
Fleet MaintenanceDiesel Engine RepairRV RepairDiesel SpecialistCommercial & Fleet

Joker Diesel / Joker Express

Nashville, TN
(615) 961-7722
5.0★(50 reviews)
Diesel Engine RepairDiesel Specialist

2nd Shift Diesel, LLC

Nashville, TN
(615) 785-9764
5.0★(20 reviews)
Aftermarket PartsDiesel Engine RepairDiesel Specialist

Ameritech Services

Nashville, TN
(615) 329-3500
5.0★(5 reviews)
Hydraulic RepairDiesel Specialist

Choice Truck And Equipment, LLC

Nashville, TN
(615) 650-9009
4.9★(26 reviews)
Diesel SpecialistDiesel RepairIndependent ShopHighly Rated

Mid-State Truck

Nashville, TN
(615) 653-0424
4.8★(12 reviews)
Transmission RepairMobile ServiceDiesel Engine RepairDiesel Specialist

West Power Services

Nashville, TN
(615) 619-5125
4.7★(30 reviews)
Fleet MaintenanceBus RepairDiesel Engine RepairDOT InspectionsRV Repair +3 more

Tennessee Contractors Equipment

Nashville, TN
(615) 292-2989
4.7★(31 reviews)
Diesel RepairIndependent ShopHighly Rated

Southern Fleet Repair & Logistics, LLC

Nashville, TN
(615) 838-7799
4.6★(11 reviews)
Fleet MaintenanceDiesel Engine RepairRV RepairDiesel SpecialistCommercial & Fleet

Commercial Truck & Equipment CTE

Nashville, TN
(615) 583-8000
4.6★(5 reviews)
Diesel SpecialistCommercial & Fleet

Fleet Equipment

Nashville, TN
(615) 259-3301
4.6★(21 reviews)
Diesel SpecialistCommercial & Fleet

Rowdy diesel repair

Nashville, TN
24/7
(629) 234-6760
4.6★(11 reviews)
Mobile ServiceDiesel Engine RepairDiesel SpecialistOpen 24 Hours

Fast Fleet Roadside Service

Nashville, TN
24/7
(423) 481-8877
4.4★(280 reviews)
DOT InspectionsMobile ServiceFleet MaintenancePreventive MaintenanceDiesel Specialist +3 more

Nashville Equipment Services Inc

Nashville, TN
(615) 297-9597
4.4★(19 reviews)
Hydraulic RepairDiesel Specialist

A-Plus Truck Repair

Nashville, TN
(615) 254-4641
4.3★(23 reviews)
RV RepairDiesel Engine RepairDiesel Specialist

All Brothers Truck Repair LLC

Nashville, TN
(615) 969-6516
4.2★(139 reviews)
RV RepairDiesel Engine RepairPreventive MaintenanceDiesel Specialist

H&E Equipment Services

Nashville, TN
(615) 248-0266
4.2★(20 reviews)
Diesel SpecialistDiesel RepairIndependent Shop

Premier Truck & Trailer Services

Nashville, TN
(615) 687-4175
4.2★(22 reviews)
Diesel Engine RepairDiesel Specialist

CML Truck and Trailer Repair

Nashville, TN
(629) 206-9018
4.2★(127 reviews)
DOT InspectionsEmergency RepairEngine DiagnosticsDiesel Specialist

Autow Fleet Services

Nashville, TN
(615) 244-1130
3.9★(20 reviews)
Preventive MaintenanceDiesel SpecialistCommercial & Fleet

Taylor Diesel Services of Nashville

Nashville, TN
(615) 242-9550
3.9★(17 reviews)
Diesel Engine RepairDiesel Specialist

Diesel Performance Parts, Inc

Nashville, TN
(615) 834-0066
3.8★(10 reviews)
Diesel Engine RepairDiesel Specialist

DSS Pro Diesel

Nashville, TN
(615) 242-4072
3.7★(39 reviews)
RV RepairDiesel Engine RepairDiesel Specialist

Specialized Truck Repair

Nashville, TN
(615) 857-3632
3.6★(329 reviews)
Fleet MaintenanceEngine DiagnosticsDOT InspectionsRV RepairHydraulic Repair +3 more

ACTS Fleet Maintenance Service

Nashville, TN
(865) 938-5910
3.6★(19 reviews)
ASE CertifiedFleet MaintenancePreventive MaintenanceDiesel SpecialistCommercial & Fleet

Interstate Truck And Trailer Repair

Nashville, TN
(561) 253-5891
3.5★(103 reviews)
RV RepairDiesel Engine RepairDiesel Specialist

Dunns Fleet & Trailer Services

Nashville, TN
24/7
(931) 624-8804
3.5★(19 reviews)
Diesel Engine RepairDiesel SpecialistCommercial & FleetOpen 24 Hours

EPIKA Fleet Services, Inc.

Nashville, TN
(833) 875-5823
3.0★(2 reviews)
Fleet MaintenanceDiesel Engine RepairRV RepairDiesel SpecialistCommercial & Fleet

Davidson County Fleet Management

Nashville, TN
(615) 862-8690
1.0★(1 reviews)
Diesel SpecialistCommercial & Fleet

Diesel Engine Repair & Diagnostics FAQ — Nashville, Tennessee

My check-engine light is on but the truck runs fine — do I really need a diesel diagnostic?
Yes, and sooner rather than later. On a modern diesel the light often means an emissions, sensor, or fuel-pressure fault that has not become a driveability problem yet. A Nashville diesel shop can pull the code, read live data, and tell you whether it is a $40 sensor or the early sign of a failing injector. Diagnostic time is normally billed as a flat fee or one hour of labor.
How do I know a Nashville shop is a real diesel specialist and not a general garage that "also does diesel"?
Ask what scan tool they use for your engine, whether they have replaced injectors on your platform this month, and how they test fuel pressure and contribution. Specialists answer in specifics — Ford IDS, Cummins INSITE, GM GDS2, balance rates, HPOP pressure. Their reviews will mention specific repairs, not just oil changes.
What are the most common engine repairs on diesel pickups in Tennessee?
Across the state the same handful of jobs come up: injector replacement, turbo actuator and vane failures, high-pressure fuel pump or CP4 failures, EGR cooler leaks, head gasket and stud jobs on 6.0 Power Strokes, and fuel contamination from bad diesel or water in the tank. Cold Tennessee mornings also expose weak glow plugs and batteries.
How long does a typical diesel engine repair take?
A diagnostic and sensor swap can be same-day. A full injector set is usually one to three days depending on parts. Turbo replacement runs one to two days. Head gaskets and in-frame rebuilds are measured in weeks, not days, because of machine-shop time — ask your Nashville shop for a realistic window and whether they can source parts before you drop the truck off.
Are aftermarket parts fine for diesel engine repairs, or should I insist on OEM?
For injectors, high-pressure pumps, and turbos, most experienced mechanics steer you to OEM or a reputable remanufacturer with a real warranty — cheap injectors are the top cause of comebacks. Filters, sensors, gaskets, and hardware from a quality aftermarket brand are generally fine. Get the part brand and warranty terms in writing on the estimate.