4L30E Valve Body, used and ready to install. Fits the 4L30E. Ships fast from the USA.
A BMW 3 or 5 Series, Isuzu Rodeo or Trooper, Honda Passport, Acura SLX, or Cadillac Catera with the GM 4L30E four-speed automatic that flares or cuts loose going from 2nd to 3rd, slams into 3rd, drops to neutral on a coast-down, or shudders at a steady cruise is a textbook valve body complaint on this transmission. This is a used, inspected 4L30E valve body carrying a 1-year warranty, built as a direct swap for a worn original.
The 4L30E was built by GM at its Strasbourg, France plant from 1991 to 2004 for light-duty, longitudinal rear-wheel-drive applications rated up to 350 Nm of engine torque. The valve body houses the shift solenoids and pressure-control solenoid the transmission control module fires to time each shift, and it routes line pressure to the clutch packs and bands. When the spool bores wear or a solenoid in the pack starts sticking, the module can no longer hold the pressure curve it wants, and the shift quality falls apart in the specific ways listed below.
Pull codes and note which shift is affected - a 2-3 flare or cutloose pattern is the most common valve body signature on the 4L30E, while a hard-stuck single gear with a solenoid circuit code points at a specific solenoid rather than the whole body. Rule out a low or burnt fluid level first, since the 4L30E's long production run means a simple service sometimes clears a soft shift that looks like a valve body problem.
The 4L30E covers BMW 3 and 5 Series models, Isuzu Rodeo, Trooper, Amigo and Axiom, Honda Passport, Acura SLX, and the Opel Omega and Cadillac Catera, across the 1991-2004 production run. GM built this transmission with different internal gear-ratio sets depending on the application - a BMW/Opel version and an Isuzu/Honda/Cadillac version - so match the casting markings and connector on your original valve body before installing, or send your VIN and we will confirm the correct version for your vehicle.
Drop the pan, unplug the solenoid harness, and remove the valve body bolts in the pattern your service manual lists so the check balls and springs stay seated when the casting comes down. Since this is a used unit, inspect the separator plate and solenoid connectors for wear before bolting it in. Change the fluid and filter at the same time - our 4L30E filter and pan gasket kit covers the BMW E34/E36/E39 application - with GM-spec Dexron automatic transmission fluid; confirm the exact Dexron revision against your owner's manual since the spec changed more than once across this unit's long production run. If a specific solenoid tested bad before you ordered, swap it with our 4L30E pressure control solenoid or 4L30E TCC solenoid rather than guessing. If the clutch packs are also slipping, our 4L30E master rebuild kit covers the full overhaul across all of these applications. Torque the bolts evenly and let the adaptive shift values relearn over the next several drive cycles.
| Fits | 4L30E |
| Part type | Valve Body |
| Condition | Used |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
BMW 3 and 5 Series, Isuzu Rodeo, Trooper, Amigo and Axiom, Honda Passport, Acura SLX, and the Opel Omega and Cadillac Catera all used the GM 4L30E four-speed automatic between 1991 and 2004.
This is a used, inspected 4L30E valve body backed by a 1-year warranty - a lower-cost option when your original casting is a confirmed match and you are not chasing a specific low-mileage upgrade.
GM built the 4L30E with different internal gear-ratio sets for the BMW/Opel applications versus the Isuzu/Honda/Cadillac applications. Match the casting markings and connector on your old valve body, or send us your VIN and we will confirm the correct version.
A 2-3 flare, cutloose shift, or coast-down drop to neutral usually points at the valve body itself. A single gear stuck with one stored solenoid code more often points at just that solenoid - test it before replacing the whole unit.
GM-spec Dexron automatic transmission fluid. The exact Dexron revision depends on your model year, so check your owner's manual or service records before filling.
