6L90 Clutch Module 2007-2023, remanufactured and ready to install. Fits the 6L90. Ships fast from the USA.
No Reverse on a hot 3500HD, a long wait before the truck backs up, or a slip into fifth with P0776 on the scan tool: on a 6L90 those complaints lead straight to the combined 1-2-3-4 and 3-5-Reverse clutch drum. This listing is a remanufactured version of that drum, rebuilt in the USA to GM number 24298744. It is the current service number, superseding the earlier 24260894, with 24263592 listed as an interchange, and it is offered for 6L90 units built from 2007 through 2023.
Two of the transmission's five clutches live in this one assembly. The 1-2-3-4 clutch is applied in the first four gears, and the 3-5-R clutch is applied in third, fifth and Reverse. Because both packs share one welded housing, a crack anywhere in the weld bleeds apply oil from whichever circuit it crosses. GM's bulletin 09-07-30-004J ties a cracked housing to slip or loss of Reverse, delayed Reverse, harsh 2-3 and 4-5 shifts and fifth-gear slip, with P0776, P2715 or P2723 set. The leak is worst when the fluid is thin and hot, which is why a truck that backs up fine in the morning may refuse after an hour of towing.
The drum must come out to be proven bad. Block the feed holes, put shop air to it and brush soapy water along the weld; bubbles condemn it. Before you pull the unit, rule out the cheaper causes. Sonnax describes how to isolate a no-Reverse condition to the apply circuit, and a sticking clutch regulator valve in the valve body can mimic a leaking drum. Gears Magazine documented a 2007 K2500 with burnt 1-2-3-4 and 3-5-R clutches and no line rise after a rebuild, so check pressure too. Our 3-5-R clutch failure guide covers the codes and air test, and the Silverado 2500 6L90 problems guide puts this failure next to the other usual suspects on HD trucks.
Listed for the 6L90 from 2007 to 2023: Silverado and Sierra 2500HD and 3500HD, Express and Savana, HD Suburban and Yukon XL, Camaro ZL1 and Corvette Z06 and ZR1. Over that span GM changed internal parts, so the surest check is the number. If your old drum or invoice shows 24298744, 24260894 or 24263592, you have the right part. Otherwise compare spline count, hub height and the sealing ring lands against your old drum, or send us your year and VIN. This is a 6L90 part and should not go into a 6L80. Browse the rest of the hard parts on the 6L90 parts page.
| Fits | 6L90 2007-2023 |
| Part type | Clutch Module |
| Condition | Remanufactured |
| Brand | GM |
| Reference | 24298744 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. GM catalogs 24298744 as the 6L90 clutch housing that holds both the 1-2-3-4 and 3-5-Reverse clutches. Some shops call it the clutch drum or clutch module.
Yes. 24298744 supersedes 24260894, and 24263592 is listed as an interchange, so any of those numbers on your old part confirms fit.
Plan on supplying new frictions and steels. Plates that ran in a cracked drum are usually burnt, and reusing them defeats the repair.
Yes. A sticking 3-5-R clutch regulator valve or worn bore can starve the clutch. Air-test the drum and check the valve body before deciding.
GM bulletin 09-07-30-004J lists P0776, P2715 and P2723 with a cracked 1-2-3-4 / 3-5-R housing, usually alongside no Reverse or fifth-gear slip.
No. The 6L90 uses larger clutch components than the 6L80, so order the drum that matches your transmission.
