Replaces the governor pressure solenoid, transducer, filter and pan gasket on Dodge 48RE transmissions that shift harsh or flare.
When a Dodge Ram or Jeep with a 46RE, 47RE or 48RE starts shifting late, slams the 1-2, flares into third, or drops into third gear and refuses to upshift, the trouble is very often the electronic governor system on the valve body. This kit lets you replace that whole corner in one pan drop: the governor pressure solenoid, the governor pressure transducer, the solenoid gasket and the output speed sensor, plus a new filter, a 3-4 accumulator spring and a pan gasket so the service is complete when the pan goes back on.
Older RE transmissions used a mechanical governor on the output shaft. The 48RE, like 2000-and-later 46RE and 47RE units, makes governor pressure electronically. The computer reads output shaft speed from the output speed sensor and throttle position, then pulses the governor pressure solenoid to build the governor pressure that moves the 1-2 and 2-3 shift valves. The transducer, a pressure sensor bolted beside the solenoid, reports the pressure actually reached so the computer can correct it. Overdrive and converter lockup are handled by separate solenoids. When the transducer drifts or the solenoid cannot build pressure, shift timing falls apart even though the clutches and bands are fine.
Do not swap parts one at a time. Put a gauge on the governor pressure tap, connect a scan tool and compare commanded governor pressure, the transducer reading and the gauge on a road test. If the gauge and the reading disagree, the transducer is suspect; if both lag the command, look at the solenoid. Transmission Digest also points out that the transducer shares a ground with the battery temperature and oxygen sensors, so check that ground before condemning parts. Our 48RE Ram 2500 Cummins shift problems guide walks through the governor codes, and the 48RE speed sensor guide covers P0720 testing.
The kit is listed for 2000-and-later Dodge and Jeep vehicles with the A500/42RE, A518/46RE, A618/47RE and 48RE, including 2003-2007 Ram 2500 and 3500 trucks with the 5.9L Cummins. The transducer uses the four-pin rectangular connector. Listed interchange numbers are 4617210 and 52118652 for the solenoid, 56028196AA through 56028196AD and 68164850AA for the transducer, and 52118789 for the filter and gasket set. Match those numbers or your connector style to the parts on your valve body, or send us your year and VIN to check. Every other 48RE part is on the 48RE parts page.
| Governor pressure solenoid | |
| Governor pressure transducer | |
| Filter and gasket interchange | |
| Kit contents | |
| Fits transmissions | |
| Model years | |
| Fluid |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. They work as a pair and sit on the same bracket on the valve body, so replacing both in one pan drop avoids paying for the job twice when the second part fails.
The written contents list is the governor pressure solenoid, transducer, solenoid gasket, output speed sensor, filter, 3-4 accumulator spring and pan gasket. If you need the overdrive and converter clutch solenoid block, see the 48RE solenoid kit, or contact us to confirm what ships before ordering.
This kit is listed for 2000-and-later units with the four-pin rectangular transducer. Earlier RE transmissions used different governor parts, so send us your year and VIN before ordering for a pre-2000 truck.
Use ATF+4. A pan and filter service on a 2006 48RE takes about 3.8 liters (8 pints) per Chrysler, but always fill to the hot mark checked in Neutral with the engine idling.
There is no special relearn for the governor parts. Clear codes, drive the truck through several full upshift cycles, and on 2005-up diesels allow the throttle valve actuator its key-on initialization before starting.
