4L30E Pressure Control Solenoid 2000, new and ready to install. Fits the 4L30E. Ships fast from the USA.
A 2000 Isuzu Rodeo, Trooper, Amigo or VehiCROSS, Honda Passport, Cadillac Catera, or BMW Z3 or 528i with the GM 4L30E automatic that suddenly slams into gear, flares between shifts, or sets a pressure control fault is the vehicle this part is for. It is a new electronic pressure control (EPC) solenoid in a boxed Rostra Powertrain package. The detail that matters for a 2000-model 4L30E: for the late production units, the Transtar parts catalog lists this same Rostra EPC solenoid that Ford used in its 4R44E and 5R55E, rather than the older GM force motor fitted to earlier 4L30Es. That is why this listing is specific to the 2000 model year rather than the whole 4L30E run.
The 4L30E is a four-speed rear-drive automatic GM built in Strasbourg, France, for BMW, Opel, Isuzu, Honda and Cadillac. It has no throttle cable controlling line pressure. The transmission control module varies the current through this solenoid, and the solenoid turns that current into a signal pressure that sets mainline at the pressure regulator. Every clutch and band in the transmission is applied with that mainline oil, so the solenoid decides how fast and how firmly each shift completes. Shift timing comes from the separate on/off shift solenoids, and converter lockup from the TCC solenoid; this part only controls pressure, which is why a failure feels like a shift quality problem rather than a missing gear.
Keep in mind that the 4L30E is known for reverse complaints that have nothing to do with line pressure. Transmission Digest's TASC Force notes most no-reverse and neutral-in-reverse problems trace to the reverse clutch, the center support, or interchanged adapter cases and gaskets, so do not expect a new EPC solenoid to fix a reverse-only fault.
Check fluid level and condition, then read the codes. An electrical code is confirmed by measuring the solenoid circuit at the transmission connector; our multimeter solenoid test guide covers the method. If you can reach the solenoid, the bench testing guide shows how to check that it actually moves fluid when powered. A harness fault between the controller and the case connector can also cause hard shifts, so inspect the wiring before condemning the part.
This solenoid is listed for the 2000 model-year 4L30E. Transtar's interchange for this Rostra EPC design covers the 4L30E from 2000 through 2004, including the 2000 BMW Z3 and 528i, 2000-2001 Cadillac Catera, 2000-2002 Honda Passport, Isuzu Trooper and Rodeo, 2000-2001 VehiCROSS and the 2000 Amigo. Earlier 4L30Es used a different GM pressure control force motor, which we stock separately as the 4L30E pressure control solenoid for 1994-1998. Because the 4L30E varies by manufacturer and changed during 1999 and 2000, compare the connector, mounting and nose of your old solenoid to the photo before installing, or send us your year and VIN to confirm. More 4L30E parts are under our shop by transmission section.
While the pan is down, many owners replace all the solenoids at once with the 2000 4L30E solenoid kit, or add just the 2000 TCC solenoid if lockup has been unreliable.
| Fits | 4L30E 2000 |
| Part type | Pressure Control Solenoid |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Late 4L30E transmissions, from 2000 on, use this Rostra-style EPC solenoid, the same design Ford used in its small rear-drive automatics. Earlier 4L30Es use a different GM force motor that will not interchange, so the year matters.
The interchange for this solenoid runs from 2000 through 2004 on the 4L30E, including Rodeo, Trooper and Passport. Match the connector and body to your original, or send us your year and VIN and we will confirm before you order.
It is rarely the cause. Reverse problems on the 4L30E most often come from the reverse clutch, center support or mismatched adapter case parts. A failed EPC solenoid usually affects every gear, with harsh or soft shifts across the board.
No. The solenoid is on the valve body and is replaced with the pan removed. Plan on a new filter and pan gasket at the same time.
Use what your owner's manual calls for. The 4L30E was used by BMW, Isuzu, Honda and Cadillac, and the fluid specification is not identical across those brands.
