10L90 Valve Body, remanufactured and ready to install. Fits the 10L90. Ships fast from the USA.
A 2019-2022 Cadillac CT4, CT5 or CT6, or a 2020-2022 Chevrolet Camaro, that shifts harsh, shudders at light throttle, slips between gears, or throws a pressure or solenoid code on its 10-speed is showing the same control-valve wear GM has recalled on this platform - just on the performance and luxury side rather than the truck and SUV side. This remanufactured, bench-ready 10L90 valve body lets you install a known-good unit rather than chasing bore wear and solenoid drift one piece at a time.
The 10L90 shares its fundamentals with the 10L80: ten forward ratios, six clutch packs, and a valve body that has to get every one of those clutches applied at the right pressure and the right instant since there is no limp-home mechanical gear to fall back on. GM's recall paperwork for this application blames a worn control valve for a gradual pressure bleed-down that shows up as harsh shifts, a stored service light, reduced engine performance, and in the worst cases a sudden drop to 2nd gear or a brief wheel-lock moment while decelerating.
NHTSA campaign 25V148 (GM recall N242480630) covers 2019-2020 CT6, 2020-2021 CT4/CT5 and 2020-2022 Camaro for this exact worn-control-valve failure, so check your VIN against GM's recall lookup before you spend money on this part - it may already be covered under warranty. If it is not covered, or the recall remedy has already been done and the symptom persists, our valve body symptoms and testing guide covers isolating a hydraulic fault from a solenoid-only one on this shared platform, and our recall writeup breaks down which VINs and campaigns GM has issued.
This listing is built for the 10L90 as installed in the Cadillac CT4, CT5 and CT6 and the Chevrolet Camaro ZL1. It shares its core design and most tech resources with the truck-platform 10L80 but is not a drop-in swap between the two - confirm you have the 10L90 rather than the 10L80 before ordering, and match the connector count and casting marks on your original unit against the photos, or send your VIN so we can confirm the exact revision. The full 10L80/10L90 parts collection covers everything else we stock for this platform.
When you swap the valve body, change the fluid and filter at the same time so contamination from the failing unit does not carry over to the new one. Torque the mounting bolts down evenly in the sequence GM specifies rather than corner-to-corner, and fill with DEXRON ULV - nothing else. Chevrolet's own 10L90 crate-engine installation documentation calls for checking the level with the engine running and the fluid at 75-80°C; read it above that window and it looks under-filled, read it below and it looks over-filled, so get the temperature right before you trust the stick. Run the TCM's adaptive relearn once everything is buttoned up. If the original complaint traced to a stored solenoid code rather than a hydraulic fault, pairing this with a fresh 10-piece solenoid kit and a filter and pan gasket kit might solve it for less money.
| Fits | 10L90 |
| Part type | Valve Body |
| Condition | Remanufactured |
| Brand | GM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The Cadillac CT4, CT5 and CT6, and the Chevrolet Camaro ZL1. The related 10L80 is the truck and SUV version used in the Silverado, Sierra, Tahoe, Suburban, Yukon and standard Escalade.
Possibly - NHTSA campaign 25V148 (GM recall N242480630) covers 2019-2020 CT6, 2020-2021 CT4/CT5 and 2020-2022 Camaro for this exact worn-control-valve failure. Check your VIN with GM before buying if your car falls in that range.
Harsh or flared shifts, a shudder that feels like converter lockup, slipping or hunting between gears, a sudden downshift to 2nd or momentary wheel-lock on deceleration, and limp mode with a stored pressure or solenoid code.
They share the same core design and most failure points, but the 10L90 is built for the CT4/CT5/CT6 and Camaro and is not a drop-in swap for the truck-platform 10L80. Confirm which one your vehicle uses before ordering.
DEXRON ULV ATF only. Chevrolet's crate-engine documentation specifies checking the level with the engine running and the fluid between 75-80°C - checking it outside that window gives a false reading.
Not necessarily - pairing a 10-piece solenoid kit with fresh fluid and filter can resolve a solenoid-only fault without replacing the whole unit.
