Skip to main content
All ProTruck & Trailer
Call (864) 517-2550
Services

Heavy-duty repair,
delivered to your rig.

From a single tire change on the shoulder of I-85 to full-fleet PM service in your yard, here's everything we wrench on. Don't see your job? Call us — odds are we handle it.

Mobile Diesel Service

Mobile semi truck repair

Our service truck rolls out fully stocked with diagnostic equipment, common-replacement parts and the tools to handle most jobs on the first visit. We work on Peterbilt, Kenworth, Freightliner, Volvo, International, Mack and Western Star — anything with a Cummins, Detroit, Paccar, Cat or DD engine.

  • Engine diagnostics — laptop scans for active and inactive codes, sensor & ECM analysis
  • Cooling & fuel systems — radiators, hoses, water pumps, fuel filters, lift pumps, injectors
  • Electrical & charging — alternators, starters, batteries, wiring, ECM and sensor faults
  • Air systems — compressors, dryers, valves, glad-hands, air-line leaks
  • Brakes & suspension — drum & disc brake jobs, slack adjusters, shocks, airbags
  • Aftertreatment — DPF cleaning, DEF system service, regen issues, NOx sensors
Diesel mechanic running computer diagnostics on a heavy-duty truck engine
Trailer Service

Trailer repair — every type

Whether it's a 53' dry van, a reefer hauling produce, a flatbed, lowboy or a dump trailer, we know the systems and stock the parts. Trailer down at a customer's dock? We come to it.

  • Brakes & ABS — chamber and slack replacement, S-cam service, ABS sensor faults
  • Lighting & 7-way — marker lights, brake lights, harnesses, pigtails, ground issues
  • Suspension & airbags — leveling valves, shocks, air ride bags, U-bolts, hangers
  • Doors, latches & hinges — hopper doors, swing doors, roll-ups, latch rods
  • Landing gear & kingpin — gearbox repair, leg replacement, fifth-wheel issues
  • Reefer minor repair — belts, sensors, alarms, basic Carrier & Thermo King service
Mobile mechanic repairing the brake system on a heavy freight trailer on the highway shoulder
24/7 Emergency

Roadside assistance & tire service

Stuck on the side of I-85, I-26 or any back-road in the Upstate? One call gets a real diesel tech with a stocked truck on the way — not a tow.

Dispatch now →

Tire Repair & Replace

Steer, drive and trailer positions. We carry common 22.5 and 24.5 sizes and can source most others quickly.

Jump Starts & Batteries

Slow crank, dead start, parasitic draw. We test, charge, and replace truck batteries on-site.

Air Leaks & Glad-Hands

Won't build air? Loud hiss? We chase down leaks at fittings, valves, lines, glad-hands and bag seats.

Lockouts & Lights

Locked out, headlight burned, blinker dead before pre-trip — quick fixes that save your hours.

Fuel Delivery

Ran her dry? We bring diesel to you and prime the system so you can finish the run.

After-Hours Calls

Nights, weekends, holidays. We answer the phone — that's the whole job at 2 a.m.

Compliance

DOT inspections & preventive maintenance

Stay legal, stay rolling. We perform federal annual inspections (FMCSA Part 396 Appendix G) on tractors and trailers, plus the kind of scheduled PM service that keeps small problems from becoming roadside breakdowns.

  • Annual DOT inspection — full Part 396 inspection with sticker and report
  • PM-A / PM-B services — scheduled oil & filter, lube, brake adjust, fluid checks
  • Pre-trip & CSA prep — get ahead of the orange triangle before scale-house surprises
  • Fleet accounts — written reports, fleet pricing, scheduled service intervals
Experienced diesel mechanic standing in front of a service truck and a parked semi
Where we work

Service area — Inman & the Upstate

Based in Inman, SC. Standard service area is roughly 50 miles in any direction; we'll travel further on fleet calls. If you're broken down on I-85 or I-26 between Gaffney and Greenville, you're in our backyard.

Inman, SC
Spartanburg
Boiling Springs
Greer
Greenville
Duncan
Wellford
Gaffney
Cowpens
Lyman
Chesnee
Campobello
Landrum
Tryon, NC
I-85 corridor
I-26 corridor
Ready when you are

Tell us where you're parked.

Send us a quick message with your location and the issue. We'll call back with a time and a written quote.

Request service →
Or call now (864) 517-2550 Mon–Sat 7am–7pm · 24/7 Emergency