8L45 Pump 2018, used and ready to install. Fits the 8L45. Ships fast from the USA.
Working on a 2018 Chevrolet Colorado or GMC Canyon with the 8L45 eight-speed and need the front pump stator? This used OEM assembly came out of a 2018 Colorado 8L45 and carries reference number 24275614 with a 27-spline stator shaft. It is the right piece when the stator shaft splines are damaged, the bores are scored, or the casting cracked after a converter or input failure, and you want a factory GM part rather than a reman unit with an unknown history. Expect normal used wear and possible light surface rust on bare steel, which is cosmetic.
In the 8L45 the fluid pump is an off-axis, chain-driven unit, so the front stator assembly is not a gear pump in the old 4L60E sense. Its 27-spline shaft locks the converter stator against rotation through the stator one-way clutch, which is what lets the converter multiply torque when a loaded Colorado pulls away from a stop. Around the input shaft, the casting routes oil for converter apply and release and for the front clutches, with sealing rings holding pressure between the circuits. When those bores wear, line pressure is lost to leakage even though the pump itself is healthy.
A 2018 model-year unit also sits after GM's running change to the stator support. GEARS Magazine reports GM added a check ball and revised passages to purge air from the stator cover circuit, curing early complaints of delayed engagement and dropping out of gear at a stop. Verify your old part against this one so you install the same design.
On a 2018 Colorado, the usual shudder complaint is fluid related, so rule out the fluid-exchange fix covered in our 8L90 and 8L45 common problems guide. If the truck will not move at all, check for a missed 15-minute reset after a fast learn and a pump that lost prime, as described in our pump failure guide. Condemn the stator only once you can see damage: chewed splines, scored seal-ring bores or a cracked flange.
This stator was removed from a 2018 Chevrolet Colorado with the 8L45 and is referenced as 24275614 with a 27-spline shaft. It suits other 8L45 units of the same design, but GM built CPA and non-CPA stator and input shaft combinations that cannot be mixed, and spline counts and shaft lengths must match your converter and input shaft. Count your old splines, compare the shaft length and bushing, or send us year and VIN and we will confirm. It will not fit an 8L90. Browse the 8L90 and 8L45 collection for the rest of the unit.
| Fits | 8L45 2018 |
| Part type | Pump |
| Condition | Used |
| Brand | OEM |
| Reference | 24275614 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It was removed from a 2018 Chevrolet Colorado with the 8L45 eight-speed, reference 24275614, with a 27-spline stator shaft.
The Canyon used the same 8L45 family, but match the spline count, shaft length and bushing style to your old stator, or send your VIN so we can confirm before you order.
No. The 8L45 pump is an off-axis, chain-driven assembly. This listing is the front stator assembly with its shaft.
The stator shaft splines must mate with the converter stator one-way clutch. A mismatch means the converter will not install or the stator will not hold.
No. The 8L90 uses its own stator support. This part is for 8L45 transmissions only.
