4L30E Valve Body 1991-2004, new and ready to install. Fits the 4L30E. Ships fast from the USA.
The GM 4L30E four-speed automatic ran from 1991 through 2004 across BMW 3 and 5 Series cars, Isuzu Rodeo and Trooper, Honda Passport, Acura SLX, and the Opel Omega and Cadillac Catera, and a worn valve body is one of the most common reasons one of these starts shifting badly. This is a new 4L30E valve body from TransGo covering the full 1991-2004 run, so unlike a used replacement you are not relying on the condition of someone else's take-off part.
Built at GM's Strasbourg, France plant for light-duty rear-wheel-drive use rated up to 350 Nm, the 4L30E uses its valve body to carry the shift solenoids and pressure-control solenoid the transmission control module switches to set shift timing, while routing line pressure to the clutch packs and bands for each gear. GM ran different internal gear-ratio calibrations depending on application - a BMW/Opel version and an Isuzu/Honda/Cadillac version - so the valve body has to match your vehicle's version, not just the transmission model number.
Pull codes and note exactly which shift is affected. A 2-3 flare or cutloose complaint without a stored circuit fault is the classic valve body wear pattern on this transmission; a stuck single gear with a solenoid circuit code points at just that solenoid first. Rule out a low or burnt fluid level with a basic service before condemning the valve body.
This valve body is built for the 4L30E across its full 1991-2004 production run in BMW 3 and 5 Series models, Isuzu Rodeo, Trooper, Amigo and Axiom, Honda Passport, Acura SLX, and the Opel Omega and Cadillac Catera. Because the gear-ratio calibration differs between the BMW/Opel version and the Isuzu/Honda/Cadillac version, confirm which your vehicle uses by matching your original casting markings, or send your VIN and we will verify the correct version before you install it.
Drop the pan, disconnect the solenoid harness, and remove the valve body bolts in the sequence your service manual lists so the check balls and springs do not fall out of position. Change the fluid and filter at the same time so debris from the worn original does not carry over - our 4L30E filter and pan gasket kit covers the BMW application - with GM-spec Dexron fluid, checking the exact revision against your owner's manual since it changed over this unit's long production run. If you already isolated a bad pressure-control or TCC solenoid before buying this, our 4L30E pressure control solenoid and 4L30E TCC solenoid are sold separately. For a transmission that has been slipping for a while, pair this with our 4L30E shift kit to firm up the shift feel, or our full 4L30E master rebuild kit if the clutch packs show wear. Torque the bolts evenly and allow the adaptive shift values to relearn over the following drive cycles.
| Fits | 4L30E 1991-2004 |
| Part type | Valve Body |
| Condition | New |
| Brand | TransGo |
| Ships | From the USA |
| Warranty | 1-year |
New. It is built by TransGo to cover the full 1991-2004 production run of the 4L30E, backed by a 1-year warranty.
No. GM used different internal gear-ratio calibrations for the BMW/Opel version versus the Isuzu/Honda/Cadillac version, so match your original casting markings or send us your VIN before ordering.
This one is new and built for the full 1991-2004 run; our other listing is a used, inspected unit at a lower price point for cars where a confirmed-match take-off part is acceptable.
2-3 shift flare or cutloose, a hard slam into 2nd or 3rd, and a coast-down drop to neutral are the classic valve body wear patterns on the 4L30E. A single gear stuck with a stored solenoid code is usually just that solenoid instead.
Change the fluid and filter with the correct Dexron spec for your model year, and inspect the pressure-control and TCC solenoids - replace either individually if you already isolated a bad one before buying this valve body.
