6L50E valve body for Up-To-2010, remanufactured and ready to install. Ships fast from the USA.
A 2008-2018 Cadillac CTS or STS, Chevrolet Camaro V6, or BMW 1/3/5-Series running the GM 6-speed automatic that slips, shifts harshly, loses forward drive, or drops into limp mode with a pressure or solenoid code is almost always pointing at the valve body before anything else on this platform. This listing is a remanufactured 6L50E valve body, built on casting 9405/9581 for up-to-2010 units, rebuilt and bench-tested with the current updates so the part you install has already been proven rather than pulled straight from a worn core.
GM built the 6L50 alongside the 6L45, 6L80 and 6L90 as one clutch-to-clutch engineering family, but each size carries its own RPO designation under the hood - MYA for 6L45, MYB for 6L50 - and the upper valve body is machined differently for each code even though the housings are nearly identical to the eye. That upper section is where line pressure gets routed through precision bores to the clutch packs, and it carries the shift and pressure-control solenoids the transmission computer fires to time every gear change. When those bores wear or a solenoid sticks, the clutches apply late, soft, or not at all.
Scan for codes first and note whether the complaint is a shift-feel issue or an outright loss of movement - those point to different circuits inside the same valve body. Sonnax's published repair notes on this transmission family describe a line pressure signature that separates the two: a flat 60-68 psi reading at the test port usually means a line pressure solenoid is stuck exhausted, while pressure that never climbs past 30 psi points to a missing boost valve instead. Our 6L45 limp mode guide covers the same test procedure, since the 6L45 and 6L50 share identical hydraulic architecture even though their parts do not interchange.
This valve body is built for the 6L50 as used in up-to-2010 Cadillac CTS and STS, Chevrolet Camaro V6, and BMW 1/3/5-Series applications, on casting 9405/9581. GM's own service bulletin on this family warns that upper valve bodies are RPO-specific, and that installing a 6L45-coded unit on a 6L50 (or the reverse) produces no reverse or a missing second gear rather than a working transmission - so confirm your RPO before ordering, or send your year, make and VIN and we will match the casting for you. The full 6L45/6L50 parts collection carries the rest of what we stock for this platform.
Use this swap as the excuse to service the fluid system properly: change the filter and pan gasket in the same visit so contamination from the old valve body never reaches the replacement, and refill with Dexron VI ATF only, since this family is unforgiving of the wrong spec. Torque the valve body down in the factory sequence rather than corner to corner, then clear stored codes and let the TCM run its adaptive relearn so clutch apply timing resets against the new hardware instead of the worn one it replaced. Our filter and pan gasket kit covers that first step. If the code that brought you here was solenoid-specific with otherwise normal shift feel, a standalone solenoid kit can resolve it for less than the cost of this valve body. Where the shift complaint goes deeper than hydraulics alone can explain, pair this with a shift kit or step up to the full 6L50 overhaul kit to address clutch and band wear at the same time.
| Transmission | 6L50E |
| Year Range | Up-To-2010 |
| Condition | Remanufactured / updated |
| Shipping | Ships from the USA |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. GM machines the upper valve body differently by RPO code - MYA for 6L45, MYB for 6L50 - even though the castings look alike. Installing the wrong one causes no reverse or a missing second gear, so confirm your RPO before ordering.
Casting 9405/9581, covering up-to-2010 6L50E applications in the listed GM and BMW vehicles.
Pull codes first, then check line pressure at the test port if possible. A flat 60-68 psi reading points to a stuck line pressure solenoid; pressure that never climbs past 30 psi points to a missing boost valve. Both live inside the same valve body.
Dexron VI ATF only. This family does not tolerate an off-spec fluid, so do not substitute.
Yes - change the filter and pan gasket at the same time, torque the bolts in the factory sequence, clear codes, and run the TCM's adaptive relearn so the computer re-times clutch fill against the new unit.
Not necessarily. A standalone solenoid kit can fix an isolated solenoid fault for less than the cost of replacing the entire valve body.
