Eaton Fuller Transmission Control Module TCM TCU Repair Service
Eaton Fuller Transmission Control Module TCM TCU Repair Service
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Eaton Fuller 4306473 TCM Repair & Programming Service
Expert Mail-In Repair Service for EH, FA, FO, FAO, EO, EA, FM & ET Series Transmission Control Modules
Save $5,000+ Compared to Dealership Replacement
DON'T replace your TCM until you read this! We've repaired over 1,000 Eaton Fuller units and discovered that 40-50% of trucks sent to dealerships for $3,000+ TCM replacements actually just need electrical repairs costing a fraction of that price.
Our Mail-In Repair Service vs. Dealership Replacement
- Complete Diagnostic Testing - We test EVERY circuit, sensor input, and component
- Full Electrical Repair - Solder-level board repairs, connector restoration, power supply fixes
- Factory Software Preserved - Your calibration settings remain intact
- Testing Under Load - We simulate real-world operating conditions
- 6-Month Unlimited Mileage Warranty - We stand behind our work
- 3-5 Day Turnaround - Fast service to get you back on the road
We Repair All 4306473 Series Part Numbers
Compatible Eaton Fuller Transmission Series
Compatible Vehicles (2002-2012 Models)
Freightliner
Peterbilt
Kenworth
International
Volvo
Mack
Sterling
Common Problems We Fix
Symptoms:
- Transmission stuck in single gear (won't shift up or down)
- No neutral confirmation (won't allow engine start)
- Intermittent shifting failures
- Transmission "power cycles" randomly
- Gear skipping or erratic shifting patterns
- Check engine light with transmission codes
- Loss of communication with engine ECU
- Clutch engagement issues
- Speedometer or gear display malfunction
Fault Codes We Specialize In:
| SPN 639 FMI 2 | J1939 Data Link - Erratic/Intermittent |
| SPN 639 FMI 9 | CAN Communication Error |
| SPN 520193 FMI 12 | TCM Internal Fault |
| Code 11 | TECU Internal Failure |
| Code 36 | Engine ECU Communication Fault |
| Code 56 | Input Shaft Speed Sensor Issues |
| Code 65 | Output Speed Sensor Problems |
| Code 72/73 | Failed to Select Rail/Engage Gear |
Why Choose ECU Maverick?
- Honest Diagnostics - We Don't Upsell: Unlike dealerships that profit from selling new units, we make money by FIXING your existing TCM. If it's beyond repair, we'll tell you upfront before you waste money.
- Expert-Level Repairs: Our technicians are ASE Certified with specialized training in Eaton Fuller automated transmissions. We repair at the component level - not just plug testing like most shops.
- Real Testing Equipment: We own Eaton ServiceRanger diagnostic software and custom test benches that simulate actual transmission operation. Your TCM is tested under load conditions, not just on a shelf.
- Experience with Older Systems: We specialize in these earlier generation Eaton Fuller control modules. Many shops won't touch them - we've perfected the repair process.
Before You Ship: Try This FREE Fix First!
40% of TCM problems are actually electrical issues! Try this before shipping:
- Clean battery terminals thoroughly with wire brush
- Check all ground connections at transmission case
- Inspect transmission harness for damage/corrosion
- Load test your batteries (should be 12.5V+ engine off)
- Check voltage at TCM connector (should be 12V+ running)
- Verify all fuses related to transmission control
Still having problems? Then it's time for our expert repair service.
Our Warranty - Best in the Industry
6-Month Unlimited Mileage Warranty
- Full parts and labor coverage
- No mileage restrictions (haul cross-country with confidence)
❓ Frequently Asked Questions
What if my TCM is beyond repair?
We'll refund your deposit minus $250 diagnostic fee. We'll also offer you a quality remanufactured replacement at our cost- still cheaper than dealership!
Do I need to send my shifter assembly too?
No, unless you have specific shifter-related codes. We test TCM independently.
Will this void my truck warranty?
No. Magnuson-Moss Warranty Act protects your right to use independent repair services.
Do you reprogram for different transmission models?
Yes! We can reprogram your TCM for different transmission configurations within the same series. Call for details and pricing.
Ready to Get Your Truck Fixed?
Search: "Eaton Fuller 4306473 Repair"
We'll respond within 3-24 hours during business hours
Related Search Terms
Eaton Fuller 4306473 repair | ETE0095710 TCM repair | ETC2008A02 repair | EH Series transmission repair | FA Series TCM | FO Series transmission control module | FAO Series repair | EO Series TCM | EA Series transmission | FM Series repair | ET Series TCM | Freightliner transmission control module | Peterbilt TCM repair | Kenworth transmission repair | transmission stuck in gear | transmission control module repair | automated transmission repair | TCM programming service | Eaton Fuller repair service | mail-in TCM repair | transmission ECU repair | automated manual transmission repair | truck transmission control unit | commercial truck TCM repair | transmission computer repair
Eaton Fuller is a registered trademark of Eaton Corporation. ECU Maverick is an independent service provider and is not affiliated with or endorsed by Eaton Corporation.

Getting Started
Submit Your Work Order
Fill out our simple work order form to get your unique work order number. We'll email you shipping instructions immediately. Ship your module to us using any carrier (USPS, FedEx, UPS). Include your work order number with your shipment.
What's Covered
Thorough Bench Testing
Every module is tested before and after repair to ensure full functionality. If your unit tests fine, shows no issues, or is deemed non-repairable, a bench fee applies. We'll contact you before charging anything beyond the base service fee.
What to Expect
Turnaround & Warranty
✓ Turnaround: 2-3 business days (complex jobs may take longer)
✓ Warranty: 6 months on repairs we perform
✓ Programming: Not required—plug and drive
About ECU Maverick — Expert ECU Repair & Programming Services
ECU Maverick specializes in component-level ECU repair and programming for European, domestic, and specialty vehicles. Based in Fort Myers, Florida, we serve independent repair shops, dealerships, and vehicle owners nationwide.
Where most shops rely on reprogram-and-replace methods, we take a different approach. Our technicians diagnose and repair individual circuits at the board level, restoring modules that others write off as failures. This expertise comes from years of reverse engineering and bench testing across thousands of control units.
Vehicles We Service
We specialize in European automotive electronics, including BMW, Mercedes-Benz, Audi, Porsche, Land Rover, Bentley, Ferrari, Lamborghini, Maserati, and Aston Martin ECU repair. We also service domestic vehicles, heavy equipment control modules, and marine electronics systems.
Why Shops and Owners Choose Us
Fast Turnaround — Most ECU repairs ship within 2–3 business days. Same-day rush service available.
Plug-and-Play Ready — Every module leaves fully programmed and coded to your vehicle. No dealer visit required.
Direct Communication — Text or call us and speak with a real technician. No ticket queues, no waiting.
6-Month Unlimited Mileage Warranty — Drive with confidence. Our warranty covers you regardless of how many miles you put on.
Our Commitment
We exist to keep your vehicle out of the dealership and back on the road—with reliable repairs, transparent pricing, and expert support from start to finish. Every job receives the same attention we'd give our own vehicle.