In-shop services · Dunn, NC

Four pillars of in-shop heavy-truck repair.

Work that needs a lift, calibrated equipment, or extended time with the truck off the road. Drop-offs are by appointment — call dispatch to schedule.

Major repair

Engine & Drivetrain

Overhauls, in-frame rebuilds, clutches, transmissions, differentials, driveshafts. We work on the major OEM engines.

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Safety critical

Brakes, Suspension & Alignment

Air brake systems, slacks, drums, S-cams. Suspension rebuilds. Heavy-truck alignments.

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Compliance

DOT Inspections & PM

Annual DOT inspections, preventive maintenance scheduling, and paper-trail documentation for audits.

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Electronics

Diagnostics & ECM

Engine control module diagnostics, fault code clearing, parameter programming, and emissions troubleshooting.

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Engine & Drivetrain Repair

From overhauls to in-frame rebuilds.

We work on the engines and transmissions that move commercial trucks. Top-end and complete overhauls. Clutch replacements. Differential and driveshaft repair. Done right, the first time, with OEM-spec parts.

Engine overhaulsCummins, Detroit, Volvo, PACCAR, Mack — top-end to complete rebuilds
In-frame rebuildsCylinder liners, pistons, rings, bearings — without pulling the engine
Clutch replacementHeavy-duty clutch service and adjustment
Transmission repairManual, automated manual, and automatic. Eaton, Allison, Volvo I-Shift
Driveline serviceU-joints, hangar bearings, slip yokes, balanced driveshafts
Differentials & axlesRebuild, gear set replacement, axle seal service

Brakes, Suspension & Alignment

The systems that stop and steer.

Air brake systems are unforgiving — they're either right or they're not. We pull the drums, check the linings, rebuild the chambers, and certify the work. Same for suspension and alignment: nothing gets signed off until it's spec.

Air brake serviceSlack adjusters, chambers, drums, S-cams, air dryers
Hydraulic brake systemsClass 4–6 trucks: rotors, pads, calipers, master cylinders
Suspension rebuildsAir bags, leaf springs, shock absorbers, U-bolts, hangars
Heavy-truck alignmentThree-axle alignments on calibrated equipment
Steering systemsTie rods, drag links, gear boxes, power steering pumps
Wheel bearings & sealsInspected, repacked, replaced. Hub-pilot and stud-pilot.

DOT Inspections & PM

Compliance, scheduled and documented.

Federal motor carrier rules don't care if you're busy. We run annual DOT inspections and preventive maintenance programs that keep your fleet legal and your paperwork audit-ready.

Annual DOT inspectionFull FMCSA 396.17 inspection with sticker and report
Preventive maintenance programsA / B / C service schedules, mileage and hours-based
Pre-trip / post-trip supportDefect repair coordination from driver reports
Audit documentationInspection records and service history retained per FMCSA requirements
Out-of-service repairIf we find a defect, we fix it — same shop, same day where possible

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Diagnostics & ECM

When the dash lights up.

Modern trucks talk through the ECM. We listen. Our shop is equipped with manufacturer-level diagnostic tooling for all major engine and transmission control modules — so you don't get a "we couldn't replicate it" report.

ECM diagnosticsCummins INSITE, Detroit DDDL, PACCAR Davie, Volvo Premium Tech Tool
Fault code analysisActive and inactive codes, root-cause troubleshooting
Parameter programmingIdle shutdown, road speed limits, PTO settings
Emissions troubleshootingDPF, DEF, EGR, SCR system diagnostics and repair
Wiring & harnessContinuity testing, harness repair, sensor replacement
Software updatesOEM ECM and TCM calibration updates

Bring it to the shop

The shop in Dunn handles what mobile can't.

Drop the truck off. We'll diagnose, quote, and have it back on the road as fast as parts allow. For breakdowns on the road, see Heavy Road Service.