Expert Transmission Service in Lakeland, FL
A failing transmission doesn't just slow your truck down—it threatens your entire operation. At Nationwide Haul in Lakeland, FL, our technicians specialize in diagnosing and repairing every type of heavy-duty transmission on the road today. From grinding gears and slipping clutches to complete transmission failures, we have the tooling and experience to get your drivetrain shifting smoothly again.
We work on all major transmission platforms including Eaton Fuller (manual and automated), Allison (automatic), Volvo I-Shift, Mack mDRIVE, Detroit DT12, and PACCAR TX-12. Our diagnostic software reads transmission fault codes directly from the ECU, giving us the precise data needed for an accurate repair plan.
Transmission & Clutch Services
Transmission Diagnostics
Harsh shifting, gear slippage, unusual noises, and warning lights all point to transmission problems. Our computer diagnostic tools identify the root cause—whether it's a software issue, sensor failure, or internal mechanical wear—before we recommend any repairs. No guesswork, no unnecessary parts swaps.
Manual Transmission Repair
Eaton Fuller and other manual transmissions are built tough, but synchronizers wear, bearings fail, and shift rails can damage over hundreds of thousands of miles. We rebuild and repair manual transmissions in-house, replacing only what's needed to restore reliable shifting performance.
Automated Manual Transmission (AMT) Service
I-Shift, mDRIVE, DT12, and UltraShift systems combine mechanical components with sophisticated electronics. Our technicians are trained on the specific calibration and diagnostic procedures these systems require. We handle actuator replacements, clutch calibrations, software updates, and complete rebuilds.
Heavy-Duty Clutch Replacement
A worn clutch wastes fuel, creates driver fatigue, and eventually leaves you stranded. We install premium clutch assemblies from Eaton, Haldex, and other OEM suppliers. Every clutch job includes flywheel inspection, pilot bearing replacement, and proper adjustment to ensure maximum service life.
Complete Transmission Swaps
When a rebuild isn't practical, we can source and install remanufactured or new transmissions with full warranty coverage. We handle all mounting, driveline adaptation, wiring, and ECM programming to ensure a seamless swap.
Signs Your Transmission Needs Attention
- Grinding or clashing when shifting gears
- Slipping out of gear or difficulty staying in gear
- Unusual vibration during acceleration
- Transmission warning lights or fault codes
- Fluid leaks under the truck
- Delayed engagement or slow shifting response
Don't ignore these symptoms. A small transmission issue today can become a catastrophic failure tomorrow. Call us or schedule a diagnostic appointment before the problem gets worse.
Roadside Transmission Assistance
If your transmission fails on I-4, US-98, or anywhere across Central Florida, our roadside assistance team responds quickly. Our mobile service trucks carry diagnostic tools to assess the situation on-site and determine whether a roadside repair or a tow to our Lakeland shop is the best option.