When something in the driveline goes wrong, the truck doesn’t earn. Our Dunn shop is set up to diagnose and repair heavy-duty diesel engines and the full drivetrain — quickly, correctly, and at a price that respects your bottom line.
What we service
- Engines: Cummins, Detroit, PACCAR (MX), Volvo, Mack, International. Routine work through major repairs.
- Clutches & transmissions: Manual and automated manual (Eaton, Allison, Mack mDrive, Volvo I-Shift, Detroit DT12). Clutch replacement, adjustments, full transmission service.
- Drivelines: Differentials, driveshafts, U-joints, center bearings, axle service.
Common jobs
- Coolant and oil leaks
- Turbocharger replacement
- Injector and pump issues
- Clutch slip, won’t disengage, hard shifting
- Whining, grinding, or vibration in the driveline
- Rear-end and differential rebuilds
Why our shop
- Heavy-truck lifts and pits to handle Class 8 work
- OEM diagnostic software for accurate fault identification (not guessing)
- We document everything — you leave with a clear record of what was done and why
- Backed by ECT’s 24/7 towing if you can’t drive it in
Call (984) 254-0761 to schedule, or request a quote online.