6T70 Clutch Drum, remanufactured and ready to install. Fits the 6T70. Ships fast from the USA.
A 6T70 that suddenly drops Reverse, or that skips 3rd and 5th on the way up, sends a lot of Traverse, Acadia, Enclave, Equinox, Malibu and Impala owners looking for this part. This is a remanufactured GM 6T70 clutch drum, pictured as an assembled housing with its input shaft and clutch packs in place. It suits a rebuilder or DIY owner who has the transmission apart and found a housing that is not worth reusing, and who would rather install a finished assembly than build a bare drum up from scratch.
The 6T70 shifts six speeds with five clutches. Three are fixed to the case; the two rotating ones live in this drum, which GM lists as the 3-5-Reverse and 4-5-6 Clutch Housing Assembly. Many catalogs call the same assembly the input drum because the input shaft is part of it. The 3-5-R clutch applies for 3rd, 5th and Reverse, and the 4-5-6 clutch applies for 4th, 5th and 6th, so the 3-4 upshift is one of these packs handing off to the other inside the same housing. Each pack has its own piston fed through sealing rings, which is why a worn ring land or cracked housing can cause slipping even with new frictions.
Scan for codes, then road test and write down exactly which gears are missing. A loss of 3rd, 5th and Reverse with 4th and 6th intact isolates the 3-5-R circuit. If the problem is a flare between 3rd and 4th, our 6T70 3-4 clutch failure guide explains how to separate a hard-part failure from a valve body problem, and the 6T70 Equinox common problems guide covers the same unit in GM's compact crossovers. With the unit apart, check the drum splines where the wave plate rides. Sonnax's study of these failures found the plate breaking at its tooth corners and damaging the drum, and a notched drum will break the next plate too.
This listing is for the 6T70, with no year range given, so matching is on you before it goes in. GM introduced a Generation 2 update for 2013, and the 6T75 used in heavier applications has its own drum. Read the RPO code on the Service Parts ID label to confirm a 6T70, then compare your old housing with this one: shaft length and turbine spline, the housing's internal splines, ring groove layout and reluctor ring position. If you are unsure, send us your year and VIN before installing. Year-specific drums for 2007 and 2007-13, plus every part for this family, are on the 6T70 transmission parts page.
| Fits | 6T70 |
| Part type | Clutch Drum |
| 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.
In most catalogs, yes. GM lists it as the 3-5-Reverse and 4-5-6 Clutch Housing Assembly, which includes the input shaft. Parts houses use both names for it, so compare the photo to the part you removed.
GM front-drive models from 2007 onward such as the Chevrolet Traverse, Equinox, Malibu and Impala, GMC Acadia and Terrain, and Buick Enclave and LaCrosse. Confirm the RPO code on the Service Parts ID label, because some of these vehicles also used the 6T75 or other transmissions.
GM introduced a Generation 2 update for 2013, so check carefully. Match shaft length, splines, ring grooves and the reluctor ring to your old drum, or send us your year and VIN.
P0776 with no Reverse, 3rd or 5th is the common one, caused by a broken 3-5-R wave plate inside the drum. The drum itself needs replacing when its splines, ring lands or bushings are damaged.
Yes. Reset the transmission adapts with a scan tool and complete the drive learn so the TCM relearns clutch fill times for the new assembly.
