48RE Tcc Solenoid 2003, remanufactured and ready to install. Fits the 48RE. Ships fast from the USA.
If your 2003-2007 Ram 2500 or 3500 with the 5.9L Cummins and 48RE is slipping on the 1-2, flaring into overdrive, losing converter lockup under load or setting a TCC code, the valve body is the part that decides all of it. Although this item is listed as a TCC solenoid, what you receive is a complete rebuilt 48RE diesel valve body for 2003-up units, as pictured: the main body with the solenoid assembly on it, rebuilt with Sonnax update parts and dyno tested before it ships. It is a remanufactured assembly, so you are buying a bench-proven hydraulic brain for the transmission instead of a single electrical part.
The 48RE is a four-speed hydraulic unit with electronic control added on top. Governor pressure, throttle pressure and line pressure meet inside the valve body, and the shift valves move when those forces balance. The overdrive and converter clutch solenoids bolted to it only redirect oil; the valves underneath do the actual work. Chrysler changed a lot here when the 48RE replaced the 46RE/47RE in heavy-duty trucks for 2003. Transmission Digest's ATSG write-up explains that the channel plate and spacer plate were revised and the No. 2 checkball was removed so the TCC solenoid is fed from forward-clutch oil, which lets the computer apply the converter in manual 1 and 2 when the truck is pulling. Sonnax's 48RE hydraulic notes also describe a higher lockup boost than the older units. That is why a 47RE valve body is not a substitute.
This unit was built with an updated pressure regulator valve (Sonnax 22771A-02K), an updated manual valve (Sonnax 22771-09), an updated solenoid switch valve and an updated throttle valve and plunger. Those are the bores that wear first on high-mileage diesel units.
Rule out the cheaper items first. A stall in reverse when hot is usually the pump or a restricted cooler, and a bad governor pressure solenoid or sensor causes shift complaints that look like valve body wear. Put a gauge on line and governor pressure and compare actual readings to what the scan tool commands. Our 48RE shift solenoid testing guide and the governor pressure solenoid guide walk through both checks.
This valve body is listed for 2003-up 48RE diesel units, which means the 2003-2007 Ram 2500 and 3500 with the 5.9L Cummins. The 48RE was updated during its run, so match the electrical connector and the throttle linkage or actuator on your old body before you order, or send us your year and VIN and we will check it. Browse the full 48RE parts collection for other options, including a used factory 48RE valve body if you only need a core-grade replacement.
| Fits | 48RE 2003 |
| Part type | Tcc Solenoid |
| Condition | Remanufactured |
| Brand | Sonnax |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is a complete rebuilt 48RE diesel valve body for 2003-up units, as shown in the photo. The solenoid assembly is included on the body. It is not a single loose solenoid.
No. The 48RE that started in 2003 uses a different channel plate, spacer plate and TCC feed circuit. A 47RE needs a 47RE valve body.
The pressure regulator valve (Sonnax 22771A-02K), manual valve (Sonnax 22771-09), solenoid switch valve and throttle valve with plunger were updated, and the assembly was dyno tested.
ATF+4. Chrysler specifies it for these trucks and warns that other fluids can cause poor shift quality and converter shudder. A pan-and-filter service takes about 8 pints, then check the level hot in Neutral.
A new filter and pan gasket at minimum. If the old unit stalled hot in reverse, check the pump and cooler flow too, because a new valve body will not fix either one.
