24/7 Heavy-Duty Support— trucks, buses & fleets (901) 687-4581
Shelby Pro Diesel
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Heavy-duty diesel service.

Trucks, buses and diesel pickups. Diagnostics, air brakes, oil service, A/C, electrical, tires, fleet wash and 24/7 roadside — every job logged digitally to the unit.

What we do

Real work, done right.

Every vehicle system has its own process: we measure it, fix it and put it on record.

Technician working under a heavy truck on the air brake system
01 · AIR SYSTEM

Air & air brakes

Compressor, governor, dryer, valves and leaks. We make sure the system builds pressure — and holds it.

  • Build-up test
  • Leak-down test
  • Slack adjusters & brake stroke
Mechanic's hands with a wrench on a diesel engine
02 · OIL SERVICE

Oil & filters

Old oil out, the right oil in for your engine. New filters and the service logged to the unit.

  • Engine oil
  • Oil, fuel & air filters
  • Fluid check
Technician inspecting an engine bay
03 · DIAGNOSTICS

Diagnostics & electrical

Code reads, starting and charging tests, wiring and sensors. Diagnosis first, then the repair.

  • Fault codes
  • Batteries, starting & charging
  • Wiring & sensors
Semi truck with the hood open in the shop
04 · A/C · COOLING

A/C & cooling

A/C recharge, leak detection, radiator, hoses and overheating.

  • A/C recharge
  • Leak check
  • Coolant & hoses
Worker pressure-washing a heavy truck
05 · TRUCK & BUS WASH

Fleet wash

Trucks and buses inside, outside or both. Built for school, passenger and delivery fleets.

  • Interior
  • Exterior
  • Both
Semi truck wheels and tires
06 · TIRES · BRAKES

Tires & brakes

Tread depth, pressure, wear, brakes and wheel-ends — what keeps you on the road and in compliance.

  • Tread depth
  • Pressure
  • Brakes & wheel-ends
Live systems

See how it works.

AIR SYSTEM COMPRESSOR TANK PSI CUT-OUT 125 PSI

Air & air brakes

Compressor, governor, dryer, valves and leaks. We make sure the system builds pressure — and holds it.

BUILD-UPLEAK-DOWNSLACK ADJ.
OIL SERVICE 15W-40 FILL ↓ DRAIN

Oil & filters

Old oil out, the right oil in for your engine. New filters and the service logged to the unit.

OILFUEL FILTERAIR FILTER
DIAGNOSTICS 13.8V J1939 · DTC 2 ACTIVE

Diagnostics & electrical

Code reads, starting and charging tests, wiring and sensors. Diagnosis first, then the repair.

DTCBATTERYWIRING
A/C · COOLING 38°F VENT TEMP

A/C & cooling

A/C recharge, leak detection, radiator, hoses and overheating.

RECHARGELEAK CHECKCOOLANT
TRUCK & BUS WASH IN · OUT · BOTH

Fleet wash

Trucks and buses inside, outside or both. Built for school, passenger and delivery fleets.

INTERIOREXTERIORBOTH
TIRES · BRAKES 11/32" TREAD DEPTH IN SPEC BRAKE STROKE

Tires & brakes

Tread depth, pressure, wear, brakes and wheel-ends — what keeps you on the road and in compliance.

TREADPRESSUREBRAKES
What we service

Truck. Bus. Pickup.

OAL 72'-0" TRAILER 53'-0" 13'-6" MAX TANDEM ENGINE / FUELDIAGNOSTICS · PERFORMANCE COOLING AIR BRAKES DPF / DEF 5TH WHEEL ELECTRICAL TIRES · SUSPENSION SHELBY PRO DIESEL DWG SPD-08CLASS 8 TRACTOR SCALE 1:48REV C · MEMPHIS
Full catalog

Start with the symptom. Follow the system.

Exact work depends on the vehicle, configuration, parts and inspection findings. For a specific make or repair, send us the unit details.

01

Diagnostics & troubleshooting

Structured fault-finding for warning lights, no-starts and intermittent faults.

  • Electronic fault-code review where supported
  • Starting / charging / electrical checks
  • Performance symptom isolation
  • Visual and mechanical inspection
02

Preventive maintenance

Drive-in routine maintenance for single units or fleets.

  • Oil and filter service
  • Tires, brakes and chassis items
  • Fluids, belts and hoses
  • Fleet intervals coordinated
Plan a visit
03

Engine & performance

Diesel engine and supporting-system work based on diagnosis.

  • Engine performance concerns
  • Fuel and air delivery checks
  • Leaks and abnormal noises
  • Repair planning after diagnosis
04

Electrical systems

Commercial-vehicle electrical faults and components.

  • Batteries, starting and charging
  • Wiring and connection faults
  • Lighting and accessory circuits
  • Sensor-level checks
05

Brakes, steering & suspension

Safety-critical heavy-duty chassis systems.

  • Brake inspection and repair
  • Steering and suspension
  • Tires and wheel-end wear
  • Roadworthiness recommendations
06

Cooling & A/C

Cooling problems that stop a vehicle fast — plus A/C.

  • Overheating diagnosis
  • Hoses, coolant and leaks
  • A/C recharge
  • System checks after repair
07

Truck & bus wash

Interior, exterior or full wash for units and fleets.

  • Exterior
  • Interior (cab or bus cabin)
  • Both
  • Multiple units coordinated
Plan a visit
08

Roadside & breakdown

Call any time. Availability depends on location and the job.

  • Initial phone triage
  • Roadside response where available
  • On-location service when practical
  • Next-step coordination
Call 24/7
09

Truck, bus & commercial

We don't claim every make or proprietary system. Send the details so we can confirm before scheduling.

Send unit details
Let's get started

Send the unit details.