6L90 Pump, remanufactured and ready to install. Fits the 6L90. Ships fast from the USA.
When a heavy-duty Silverado or Sierra 2500/3500, an Express or Savana van, or a Camaro ZL1 with the 6L90 starts hesitating before Drive or Reverse grabs, slips across several gears once it is hot, or will not build pressure under a load, the pump cover is one of the first parts a rebuilder looks at. This listing is a remanufactured 6L90 pump cover assembly, referenced to GM service pump cover 24248573. The photo shows the cover face with its stator support shaft and the machined feed passages that carry oil to the rest of the unit.
The 6L90 pump is not a separate bolt-in cartridge. Its rotor, slide and vanes ride in a pocket machined into the bell housing, and this cover closes that pocket. The cover is where the action happens hydraulically: it holds the pressure regulator valve and its isolator valve, it carries the stator support that the torque converter rides on, and its passages route regulated oil to the clutch feed circuits. The TEHCM moves the regulator through the pressure control solenoid, and the regulator in turn sets the position of the pump slide, which decides how much oil the pump moves. A scored cover face, a sticky regulator or a worn stator bushing area therefore drags line pressure down in every range at once, and a six-speed that shifts clutch-to-clutch with no bands has nothing to fall back on.
Put a gauge on the line pressure tap and compare idle and commanded pressure before anything comes apart. Low pressure in every range that will not rise on command points to the supply side; a single slipping clutch with good pressure points somewhere else. Our 6L90 pump failure symptoms guide lays out the test sequence, and the 6L90 common problems and fixes article covers the cooler bypass, filter and converter issues that can mimic a pump fault. If the converter has come apart, plan on flushing the cooler and checking the valve body, because the debris travels.
This cover is listed for the GM 6L90 (RPO MYD) and referenced to GM 24248573, the same service pump cover number GM uses across the 6L80 and 6L90 family. The 6L90 went into 2007 and later heavy-duty Silverado and Sierra pickups, Express and Savana vans and the Camaro ZL1. The listing does not name a single model year, so pull your old cover and compare the part number, stator shaft spline and bolt pattern before you install, or send us your year and VIN and we will check it. You can see every 6L90 part we carry on the 6L90 transmission parts page.
If the unit is already out for a pump, most builders refresh the soft parts at the same time with a 6L90 overhaul kit, and a truck that came in with metal in the pan often needs a clean 6L90 valve body as well.
| Fits | 6L90 |
| Part type | Pump |
| Condition | Remanufactured |
| Brand | OEM |
| Reference | 24248573 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is listed as a remanufactured 6L90 pump referenced to GM 24248573, which is the service pump cover number. On the 6L90 the rotor, slide and vanes run in a pocket in the bell housing, so the cover is the serviceable pump half. If your rotor or slide is also worn, add a pump rotor and slide kit.
GM uses the 24248573 service cover number across the 6L80 and 6L90 family, but this listing is sold for the 6L90. Compare your old cover's part number, stator spline and bolt pattern, or send your year and VIN before ordering.
Dexron VI automatic transmission fluid. Fill it, then set the level hot with the engine running using the check plug procedure for your truck.
Yes. Reset the transmission adapts with a scan tool and drive the relearn so the TEHCM learns clutch fill times with the new pressure. Skipping it can leave harsh or soft shifts.
Check the regulator and isolator valves for rust inhibitor from the factory packaging, confirm the filter neck is seated tightly in its bore, and rule out a stuck thermal bypass or a pressure control solenoid fault in the TEHCM.
