Diesel Doc · After Hours Dispatch Available to Your Location

Mobile Diesel Mechanic & Heavy-Duty Truck Repair

CALL NOW FOR DISPATCH  (901) 258-1528

Diesel Doc sends certified diesel mechanics directly to you.

We exclusively service commercial fleets, Class 7–8 semi-trucks, commercial trailers, transport refrigeration units (reefer trucks), heavy machinery, and Class A/Super C motorhomes & RV’s.

No tow. No shop queue. Repaired on location, most jobs same-day.

*We do not service light duty diesel pickup trucks. 

View Our Mobile Mechanic Services

What We Fix

Our Services.

Serving North Mississippi • Greater Memphis • West Memphis • Eastern Arkansas

Every truck rolls stocked for engine, air brake, electrical, and diagnostic work, so most repairs happen in one visit, on location.

Semi Diesel Truck on the roadside waiting on a repair

⇒ EMERGENCY

Diesel Roadside Assistance

Jump-starts, no-starts, fuel problems, and roadside diagnostics, dispatched directly to you.

Roadside Assistance ⇒

Reefer Cold-Chain Truck waiting on Repair

⇒ COLD CHAIN

Reefer & Cold-Chain Repair

Thermo King & Carrier reefer diagnostics, compressor and alarm-code repair to protect temperature-sensitive freight.

Reefer Repair ⇒

Cummins semi truck with hood up being repaired

⇒ FULL REPAIR

Semi-Truck & Trailer Repair

Engine, transmission, air brake, and ECM/ECU repair for sleeper cabs, day cabs, and trailers of every type.

Truck & Trailer Repair ⇒

Parking lot full of semi trucks needing fleet maintenance

⇒ FLEET

Fleet PM & DOT Inspections

On-site preventive maintenance and DOT/FMCSA-compliant inspections at your yard, keep your fleet moving.

Fleet Maintenance ⇒

An excavator on a jobsite needing a repair

⇒ EQUIPMENT

Heavy Equipment Repair

Excavators, loaders, dozers, and generators, serviced on the job site to avoid transport costs and delays.

Equipment Repair ⇒

A RV parked at a campsite

⇒ MOTORHOMES

RV & Motorhome Repair

Engine, chassis, and generator repair for Class A and diesel-pusher RVs, wherever they’re parked.

RV’s & Motorhomes ⇒

THE PROCESS

From breakdown to back-on-the-road.

.01

Call It In

Call with your location, unit type, issue, and contact info.

.02

Dispatch

Nearest tech is routed straight to your exact spot.

.03

Diagnose

On-site diagnostics scan identifies the fault, engine to ECM.

.04

Repair

Fixed on location from a fully stocked service truck.

.05

Rolling Again

Completed same-day in the large majority of calls.

WHERE WE WORK

Three Coverage Areas. One Call

Mississippi

North Mississippi

Cities

Southaven, Horn Lake, Walls, Hernando, Olive Branch, Coldwater, Senatobia, Holly Springs, Potts Camp, Oxford, New Albany, Batesville

Counties

DeSoto, Marshall, Tate, Tunica, Panola, Lafayette, Union

Tennessee

Greater Memphis

Cities

Memphis, Bartlett, Germantown, Collierville, Arlington, Oakland

Counties

Shelby, Tipton, Fayette

Arkansas

West Memphis / Eastern Arkansas

Cities

West Memphis, Marion, Jonesboro

Counties

Crittenden, Craighead

Memphis sits at the center of the coverage area as one of the busiest inland freight hubs in the country, right where Interstate 40 and Interstate 55 cross paths. TDOT identifies I-40, I-55, I-240 and I-269 among the primary highway routes carrying freight through the Memphis region, along with the Lamar Avenue/US-78 corridor, which carries heavy truck traffic between Memphis and North Mississippi. Diesel Doc’s coverage area sits directly along these routes, from Southaven and Olive Branch near I-269 in North Mississippi to West Memphis, where I-40 and I-55 cross the river into Arkansas.

Visit Our Full Service Area ⇒

24/7

Emergency Dispatch

3

States Covered

6

Service Lines

0

Tow Trucks Needed

WHY DIESEL DOC

Built for the road, not the shop.

True mobile capability

A fully stocked service truck comes to you, avoiding towing.

Certified technicians

Diesel-trained and diagnostics-certified across every major engine platform.

Tri-state coverage

Mississippi, Tennessee, and Arkansas from a single call.

Fleet-ready

DOT inspection authority, PM programs, and standing rate agreements.

All diesel platforms

Semi-trucks, trailers, reefer units, heavy equipment, and RVs.

Upfront pricing

A clear estimate before any work begins, no surprises at the ticket.

Our Certifications

  • DOT Certified

  • ASE Medium-Heavy Truck Certifications (Series T)

  • OEM Certification

  • EPA Certification

QUESTIONS

Straight answers, no guesswork.

No. Diesel Doc specializes exclusively in commercial, heavy-duty diesel equipment, including Class 7 and Class 8 semi-trucks, commercial trailers, transport refrigeration units (reefers), heavy earthmoving machinery, and diesel motorhomes. We do not service light-duty consumer pickup trucks or passenger passenger diesel vehicles,

Diesel Doc comes to you. Technicians travel to your exact location with a fully equipped mobile service truck, so towing is rarely necessary.

Yes, we offer emergency after hours dispatch which includes 24 hours a day, 7 days a week, including nights, weekends, and holidays.

Three coverage areas: North Mississippi (Southaven, Horn Lake, Hernando, Olive Branch, Oxford, and surrounding counties), Greater Memphis (Memphis, Bartlett, Germantown, Collierville, Arlington, Oakland), and West Memphis / Eastern Arkansas (West Memphis, Marion, Jonesboro).

Yes, including Thermo King and Carrier systems, compressor failure, alarm codes, and temperature control issues.

Yes, on-site, DOT/FMCSA-compliant annual inspections and fleet preventive maintenance at your yard or terminal.

Response time depends on your location relative to the nearest dispatched technician, but emergency roadside calls are prioritized for the fastest possible response. Call for a current ETA.

Both. Diesel Doc services diesel-powered heavy equipment, excavators, loaders, dozers, generators, in addition to semi-trucks, trailers, and RVs.

Diesel Doc’s mobile service trucks carry a stocked inventory of common parts and consumables for on-the-spot repair; less common parts may require a short order lead time, communicated upfront.

Diesel Doc provides an upfront cost estimate, including any service call fee, labor, and parts, before any work begins, so there’s no guesswork before the ticket starts.

Both. Diesel Doc serves independent owner-operators and large fleet accounts equally, from a single emergency call to standing maintenance contracts.

Roadside assistance covers immediate breakdown response. Mobile repair covers the full range of diesel repair work, including engine, transmission, and system-level repairs, all performed on location.

Broken down right now?

Call dispatch. A technician will be routed to your exact location.