6L90 Pump 2007, remanufactured and ready to install. Fits the 6L90. Ships fast from the USA.
A 2007 Silverado or Sierra 2500HD/3500HD, Express or Savana that engages slowly when cold, slips in every gear once warm, or whines in step with engine speed is often telling you the 6L90 front pump can no longer make pressure. This is a remanufactured GM pump for the 2007 model year, the first year the 6L90 went into heavy-duty pickups and full-size vans, and it is shown as a complete assembly with the stator support shaft in place.
Every clutch apply, every shift and the converter clutch all run on oil from this pump. Unlike older fixed-gear pumps, the 6L90 uses a variable-displacement vane pump built into the bellhousing. A spring-loaded slide changes the pump output, so the unit makes high volume at idle and backs off at highway speed. The pressure regulator valve sits in the pump cover and is controlled by the TEHCM through the line pressure solenoid. That means a worn slide, a scored rotor pocket or a sticking regulator valve all show up the same way at the driver's seat: low pressure, slipping and heat.
Test line pressure at idle and at stall before you pull the unit. If pressure is low in every range and does not rise when commanded, the fault is in the supply side: pump, regulator valve or a filter that is not sealing. Check the filter and its seal first, because GM bulletin 23-NA-224 changed the filter and seal to separate parts, and a missing or damaged seal lets the pump suck air. Converter damage also ruins pumps, since a failed converter hub or clutch sends debris straight into the rotor. Our 6L90 pump failure guide covers the test sequence, and 6L90 valve body testing helps separate a pump fault from a valve body fault.
This pump is listed for the 2007 GM 6L90 (RPO MYD). The 6L90 shares its pump design family with the 6L80, but the bellhousing and pump castings and the converter hub fit must match your unit. Compare the casting, the bolt pattern and the stator shaft length against your old assembly, or send us your year and VIN to confirm before it ships. Other years and every part for this unit are on the 6L90 parts page.
If the old pump failed from debris, rebuild or replace the rest of the unit now. A 6L90 banner rebuild kit covers the clutches and seals, and a flushed or new 6L90 transmission cooler keeps old debris out of the new pump.
| Fits | 6L90 2007 |
| Part type | Pump |
| 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.
It is listed for the 2007 6L90 (RPO MYD), which includes the 2007 Silverado and Sierra HD pickups and Express and Savana vans. Compare it with your old assembly or send your VIN to confirm before installing.
A pump fault drops pressure in every range and often adds a whine that follows engine speed. A valve body fault usually affects specific shifts or gears. A line pressure test at idle and stall is the fastest way to tell.
Replace the front seal, the pump gasket and the filter with its seal, and inspect the converter hub. If debris killed the old pump, also rebuild the clutches and flush or replace the cooler.
Yes. GM calls for resetting the transmission adapts after pump cover replacement. Clear the adaptive values with a scan tool and complete the relearn drive.
Dexron VI. Prime the pump with fluid before the first start, then check the level hot through the check plug.
