6L80 Pump 2007, remanufactured and ready to install. Fits the 6L80. Ships fast from the USA.
A 2007 6L80 that is slow to go into Drive or Reverse on a cold morning, flares on the 2-3 upshift, or slips everywhere once it warms up is often telling you about the front pump rather than a single clutch. This is a remanufactured GM 6L80 pump assembly listed for 2007 applications, the model year of the redesigned Silverado, Sierra, Tahoe, Suburban, Yukon and Escalade. It is for the builder or shop that has confirmed the pump is the weak point and wants a complete, ready-to-install assembly instead of rebuilding the old one.
The pump is driven by the torque converter hub, so it turns whenever the engine runs. It supplies all the fluid pressure the transmission uses, and the pressure regulator valve in the pump body sets line pressure from there. In the 6L80 the pump cover also carries the stator support and the sealing rings that feed oil to the 1-2-3-4 and 3-5-Reverse clutches. That puts the pump at the center of two jobs: making enough pressure, and passing it to rotating clutch drums without leaking. Wear in the gears, the bushing, the regulator valve bore or those sealing ring areas shows up as low or unstable pressure everywhere downstream.
Put a pressure gauge on the line pressure port and compare actual pressure with what the TCM is commanding. Pressure that is low in every range, or that will not rise when commanded, points at the pump or its regulator. Pull the pan as well. GM has documented damaged pumps spiking pressure down the filter neck and splitting the filter, and a filter that has dropped out of a mis-machined pickup bore causes symptoms that look like low fluid. On 2007 units specifically, GM's bulletin for transmissions built before December 2008 traces a 2-3 flare and delayed engagement to leakage at the pump cover sealing rings. Our 6L80 pump failure symptoms and replacement guide goes through each of these checks, and the 6L80 transmission service guide covers the fluid and filter side.
This pump is listed for the 2007 6L80, branded GM and remanufactured. A 2007 falls inside the pre-December 2008 build window, so ask us which sealing ring design this assembly carries before you install it, and note that the revised two-piece rings retrofit only as a complete set. Pump covers and related parts changed more than once during the 6L80's run, so match your old pump against this one on the bench and confirm the converter hub fits the bushing. If you have a 6L90 in a heavy-duty truck, confirm with us first. Send your year and VIN, check the RPO code on the glovebox label (MYC is the 6L80), or browse other years on the 6L80 transmission page.
| Fits | 6L80 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 6L80 used in those GM trucks and SUVs. Send us your year and VIN and compare your old pump against it before installation, since pump parts were revised during production.
GM's bulletin covers 6L80 and 6L90 units built before December 2008, which includes 2007. Leakage at the pump cover sealing rings causes a flared 2-3 upshift and delayed or harsh engagement. Ask us which ring design this assembly has.
A pump problem usually affects every gear at once and shows as low line pressure on a gauge. A single burned clutch pack usually affects only the gears that use it.
A new front seal, the filter and filter seal, and fresh Dexron VI. If the clutches slipped on low pressure, plan on an overhaul kit while the transmission is apart.
Fill the pump with Dexron VI during assembly, fill the transmission before the first start, then check and set the level with the fluid hot at the check plug.
Yes. Reset transmission adapts and run the learn procedure with a scan tool, because the TCM learned clutch fill times on the old low pressure.
