Chrysler 68RFE Transmission Repair & Rebuilding
The 68RFE is the heavy-duty six-speed automatic used behind the 6.7L Cummins in Ram 2500 and 3500 trucks. It is the transmission most Cummins owners ask us about, and the failures we see are strongly tied to towing load, heat and fluid service history. We diagnose and rebuild 68RFE units in Glendale.
Common applications
- Ram 2500 and 3500 pickups with the 6.7L Cummins
- Chassis cab and commercial diesel applications
- Heavy tow and fifth-wheel use
Common problems and symptoms
Clutch capacity is the limiting factor in heavily loaded or tuned trucks. Slipping under load is the most common complaint we hear on this unit.
Valve body wear, solenoid faults and pressure control problems are all common contributors.
Frequently heat or pressure related. Needs scan data captured as close to the event as possible.
The converter is a known wear item on towing trucks and is routinely replaced during rebuild.
How we diagnose it
- Road test under load with data logging where safe
- Scan-tool review of temperature, pressure and slip data
- Line pressure testing against specification
- Pan inspection for clutch material and metal
- Cooling circuit inspection including the converter cooler path
Repair and rebuild options
- Valve body and solenoid pack service
- Complete rebuild with components matched to the truck's duty cycle
- Torque converter replacement and full cooler flush
- Hard-part inspection with shaft, drum and pump replacement as needed
- Post-repair quick-learn and loaded verification test
Vehicles that use this transmission
Verified applications with their own repair pages. Where engine or trim changes the transmission, we confirm by VIN before quoting any work.
Frequently asked questions
Does towing wear out a 68RFE faster?
Heavy towing raises fluid temperature and clutch load, which does accelerate wear. Cooling condition and fluid service history matter a great deal on these trucks.
My truck is tuned. Does that change the rebuild?
It changes what we inspect and discuss. Added torque puts more demand on clutch capacity, and we will talk through what that means for your build before any work starts.