Transmission Services

Transmission Services
Transmission Services

Expert Diesel Transmission Services for Smooth and Reliable Performance

Your diesel truck’s transmission is a critical link between the engine and the wheels, managing torque, gear shifts, and drivability under heavy loads. At RG Diesel, LLC in Greeneville, TN, we provide expert transmission services designed specifically for heavy‑duty diesel platforms like Powerstroke, Cummins, and Duramax. Whether you need routine maintenance, diagnostics, or major repair work, our team has the experience and tools to help keep your truck running strong.

Call 423‑823‑9987 or visit 3460 W Andrew Johnson Hwy to schedule diesel transmission service today.

When to Bring Your Diesel Truck in for Transmission Service

Transmission problems often develop gradually but can quickly lead to major repairs if ignored. Schedule a check if you notice:

  • Hard or delayed shifting
  • Slipping gears or loss of power
  • Jerking or clunking when changing gears
  • Transmission fluid leaks
  • Unusual noises during acceleration
  • Burning smell from the drivetrain

Our specialists perform thorough diagnostics to pinpoint the cause and recommend the most effective solution.

Diesel Transmission Services We Offer

Transmission Diagnostics

We start with advanced electronic and mechanical diagnostics to isolate the source of performance issues. This allows us to make accurate recommendations and avoid unnecessary repairs.

Fluid Exchange & Filter Service

Fresh transmission fluid and a clean filter are essential to maintaining proper hydraulic function and protecting internal components in high‑stress diesel applications.

Four-Wheel Drive Transmission

Four-wheel drive (4x4) diesel vehicles boast differential gears, front and rear axles, and a transfer case connected to the transmission. The maintenance of 4x4 diesel vehicles necessitates meticulous care for the transfer case, front and rear differentials, and transmission fluids, all of which are subjected to the high torque of a diesel engine. For top-tier service regarding your four-wheel drive diesel transmission, visit us at 3460 W Andrew Johnson Hwy.

Front-Wheel Drive Transmission

In front-wheel drive diesel vehicles, the engine exclusively drives the front wheels. Power flows through the transmission to the final drive, then splits and propels the two front wheels through the drive axles. Front-wheel drive diesel vehicles position the engine, transmission, and related components at the front of the vehicle. For front-wheel drive transmission repairs, rely on RG Diesel, LLC.

Solenoid & Valve Body Repair

Solenoids and valve bodies control fluid flow and gear engagement. We diagnose and repair or replace faulty components to restore precise shifting and responsiveness.

Torque Converter Service

The torque converter transfers power from the engine to the transmission. Problems here often cause slipping or poor acceleration. We inspect and repair or replace converters to restore performance.

Clutch & Band Service

For transmissions with clutches and bands, we check for wear and replace components as needed to maintain proper gear engagement and prevent slippage.

Complete Transmission Rebuild

If internal wear is significant, a rebuild may be the best option. We disassemble, inspect, repair, and reassemble transmissions using high‑quality parts so your system performs like new.

Transmission Replacement

When repair isn’t enough, we provide full transmission replacement using remanufactured or new units selected for strength, durability, and compatibility with your diesel truck.
Why Specialized Transmission Care Matters for Diesel Trucks

Diesel transmissions operate under higher torque and heavier loads than typical gas‑powered transmissions. This means they require a unique blend of robust components, precise fluid management, and experienced care. Regular transmission service helps:

  • Prolong transmission life
  • Maintain smooth and consistent shifting
  • Improve fuel efficiency
  • Reduce the risk of breakdowns
  • Ensure safe towing and load handling

At RG Diesel, LLC, we combine diesel‑specific knowledge with professional diagnostic tools to deliver dependable results.

Transmission Services FAQs

How often should I have my diesel truck’s transmission serviced?

Transmission fluid and filter changes are usually recommended every 30,000–60,000 miles, depending on towing, load, and duty cycle. We’ll help you set the best schedule.

Can a fluid change fix shifting problems?

Sometimes. Contaminated or burned fluid can cause poor shifting. A fluid exchange can help if there’s no internal damage.

What is a transmission rebuild?

A rebuild involves disassembling the transmission, replacing worn internal parts, and reassembling it to restore function closer to original performance.

How long does a transmission repair take?

Minor repairs can be completed in a day, while rebuilds or replacements typically take several days depending on parts and repair complexity.

Does transmission work affect warranty?

Warranty coverage depends on your specific plan. We can verify warranty details before performing service.

At RG Diesel, we fix it right the first time with expert service, dependable workmanship, and honest communication you can count on.

Contact Us

Hours Mon - Fri: 8:00 am - 5:00 pm
Service Area East Tennessee, Northeast TN, Southern VA, Tri-Cities area
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